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authorVijay Kumar Banerjee <vijay@rtems.org>2021-03-22 21:05:25 -0600
committerVijay Kumar Banerjee <vijay@rtems.org>2021-04-07 19:15:51 -0600
commit1b07480ddc93c10777eff5072e7621ed0c96d30c (patch)
treea461fc549c63c3bfad6aadbdf841c000062feb5f
parent5e175b5f7453bb68996097b0283f6a37780b2fec (diff)
downloadrtems-libbsd-1b07480ddc93c10777eff5072e7621ed0c96d30c.tar.bz2
Import telnetd from RTEMS repository
The files have been taken from RTEMS repository with head commit at bd9e45d91f77657445400bc2c814f251c9e37cef
-rw-r--r--libbsd.py22
-rw-r--r--rtemsbsd/include/rtems/telnetd.h137
-rw-r--r--rtemsbsd/telnetd/README23
-rw-r--r--rtemsbsd/telnetd/check_passwd.c106
-rw-r--r--rtemsbsd/telnetd/des.c873
-rw-r--r--rtemsbsd/telnetd/des.h1
-rw-r--r--rtemsbsd/telnetd/genpw.c79
-rw-r--r--rtemsbsd/telnetd/pty.c401
-rw-r--r--rtemsbsd/telnetd/telnetd-init.c18
-rw-r--r--rtemsbsd/telnetd/telnetd.c449
10 files changed, 2100 insertions, 9 deletions
diff --git a/libbsd.py b/libbsd.py
index add91e5a..cc269a73 100644
--- a/libbsd.py
+++ b/libbsd.py
@@ -296,6 +296,12 @@ class rtems(builder.Module):
'pppd/upap.c',
'pppd/utils.c',
'telnetd/telnetd-service.c',
+ 'telnetd/check_passwd.c',
+ 'telnetd/des.c',
+ 'telnetd/pty.c',
+ 'telnetd/genpw.c',
+ 'telnetd/telnetd-init.c',
+ 'telnetd/telnetd.c',
],
mm.generator['source']()
)
@@ -5371,8 +5377,7 @@ class tests(builder.Module):
self.addTest(mm.generator['test']('arphole', ['test_main'],
runTest = False, netTest = True))
self.addTest(mm.generator['test']('telnetd01', ['test_main'],
- runTest = False, netTest = True,
- extraLibs = ['telnetd']))
+ runTest = False, netTest = True))
self.addTest(mm.generator['test']('unix01', ['test_main']))
self.addTest(mm.generator['test']('ftpd01', ['test_main'],
netTest = True,
@@ -5400,27 +5405,26 @@ class tests(builder.Module):
self.addTest(mm.generator['test']('mutex01', ['test_main']))
self.addTest(mm.generator['test']('condvar01', ['test_main']))
self.addTest(mm.generator['test']('ppp01', ['test_main'], runTest = False,
- extraLibs = ['ftpd', 'telnetd']))
+ extraLibs = ['ftpd']))
self.addTest(mm.generator['test']('zerocopy01', ['test_main'],
- runTest = False, netTest = True,
- extraLibs = ['telnetd']))
+ runTest = False, netTest = True))
self.addTest(mm.generator['test']('smp01', ['test_main'], extraLibs = ['rtemstest']))
self.addTest(mm.generator['test']('media01', ['test_main', 'pattern-test'],
runTest = False,
- extraLibs = ['ftpd', 'telnetd']))
+ extraLibs = ['ftpd']))
self.addTest(mm.generator['test']('mcast01', ['test_main']))
self.addTest(mm.generator['test']('vlan01', ['test_main'], netTest = True))
self.addTest(mm.generator['test']('lagg01', ['test_main'], netTest = True))
self.addTest(mm.generator['test']('log01', ['test_main']))
self.addTest(mm.generator['test']('rcconf01', ['test_main']))
self.addTest(mm.generator['test']('rcconf02', ['test_main'],
- extraLibs = ['ftpd', 'telnetd']))
+ extraLibs = ['ftpd']))
self.addTest(mm.generator['test']('cdev01', ['test_main', 'test_cdev']))
self.addTest(mm.generator['test']('pf01', ['test_main'],
- extraLibs = ['ftpd', 'telnetd']))
+ extraLibs = ['ftpd']))
self.addTest(mm.generator['test']('pf02', ['test_main'],
runTest = False,
- extraLibs = ['ftpd', 'telnetd']))
+ extraLibs = ['ftpd']))
self.addTest(mm.generator['test']('termios', ['test_main',
'test_termios_driver',
'test_termios_utilities']))
diff --git a/rtemsbsd/include/rtems/telnetd.h b/rtemsbsd/include/rtems/telnetd.h
new file mode 100644
index 00000000..1f8e1c55
--- /dev/null
+++ b/rtemsbsd/include/rtems/telnetd.h
@@ -0,0 +1,137 @@
+/*
+ * Original Author: Fernando RUIZ CASAS (fernando.ruiz@ctv.es)
+ * May 2001
+ * Reworked by Till Straumann and .h overhauled by Joel Sherrill.
+ *
+ * Copyright (c) 2009 embedded brains GmbH and others.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_TELNETD_H
+#define _RTEMS_TELNETD_H
+
+#include <rtems.h>
+#include <rtems/shell.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool rtems_telnetd_login_check(
+ const char *user,
+ const char *passphrase
+);
+
+/**
+ * @brief Telnet command type.
+ */
+typedef void (*rtems_telnetd_command)(
+ char * /* device name */,
+ void * /* arg */
+);
+
+/**
+ * @brief Telnet configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Function invoked for each Telnet connection.
+ *
+ * The first parameter contains the device name. The second parameter
+ * contains the argument pointer of this configuration table.
+ */
+ rtems_telnetd_command command;
+
+ /**
+ * @brief Argument for command function.
+ */
+ void *arg;
+
+ /**
+ * @brief Task priority.
+ *
+ * Use 0 for the default value.
+ */
+ rtems_task_priority priority;
+
+ /**
+ * @brief Task stack size.
+ *
+ * Use 0 for the default value.
+ */
+ size_t stack_size;
+
+ /**
+ * @brief Login check function.
+ *
+ * Method used for login checks. Use @c NULL to disable a login check.
+ */
+ rtems_shell_login_check_t login_check;
+
+ /**
+ * @brief This is an obsolete configuration option.
+ *
+ * It must be set to false, otherwise rtems_telnetd_start() will do nothing
+ * and returns with a status of RTEMS_NOT_IMPLEMENTED.
+ */
+ bool keep_stdio;
+
+ /**
+ * @brief Maximum number of clients which can connect to the system at a
+ * time.
+ *
+ * Use 0 for the default value.
+ */
+ uint16_t client_maximum;
+
+ /**
+ * @brief Server port number in host byte order.
+ *
+ * Use 0 for the default value.
+ */
+ uint16_t port;
+} rtems_telnetd_config_table;
+
+/**
+ * @brief Starts the Telnet server using the provided configuration.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_INVALID_ADDRESS The command function in the configuration is
+ * @c NULL.
+ * @retval RTEMS_RESOURCE_IN_USE The server port is already in use.
+ * @retval RTEMS_NOT_IMPLEMENTED The keep stdio configuration option is true.
+ * @retval RTEMS_UNSATISFIED Not enough resources to start the Telnet server or
+ * task priority in configuration is invalid.
+ */
+rtems_status_code rtems_telnetd_start(const rtems_telnetd_config_table *config);
+
+/**
+ * @brief Telnet configuration.
+ *
+ * The application must provide this configuration table. It is used by
+ * rtems_telnetd_initialize() to configure the Telnet subsystem. Do not modify
+ * the entries after the intialization since it is used internally.
+ */
+extern rtems_telnetd_config_table rtems_telnetd_config;
+
+/**
+ * @brief Initializes the Telnet subsystem.
+ *
+ * Uses the application provided @ref rtems_telnetd_config configuration table.
+ */
+rtems_status_code rtems_telnetd_initialize(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/rtemsbsd/telnetd/README b/rtemsbsd/telnetd/README
new file mode 100644
index 00000000..3807aa5e
--- /dev/null
+++ b/rtemsbsd/telnetd/README
@@ -0,0 +1,23 @@
+Author: fernando.ruiz@ctv.es (correo@fernando-ruiz.com)
+
+This directory contains a telnetd server
+primary features:
+
+ + create a user shell pseudo-terminal task.
+
+This code has not been extensively tested. It is provided as a tool
+for RTEMS users to open more shell tcp/ip pseudo-terminal.
+Suggestions and comments are appreciated.
+
+Read libmisc/shell for more information.
+
+NOTES:
+
+1. OOB not yet implemented. Only a reduced negotiation is implemented.
+
+2. If you have tcp/ip initialied you can start telnetd daemon.
+ You need register pseudo-terminals driver into device drivers table.
+
+Enjoy it.
+
+FUTURE:
diff --git a/rtemsbsd/telnetd/check_passwd.c b/rtemsbsd/telnetd/check_passwd.c
new file mode 100644
index 00000000..b4ea4d01
--- /dev/null
+++ b/rtemsbsd/telnetd/check_passwd.c
@@ -0,0 +1,106 @@
+/*
+ * Authorship
+ * ----------
+ * This software was created by
+ * Till Straumann <strauman@slac.stanford.edu>, 2003-2007
+ * Stanford Linear Accelerator Center, Stanford University.
+ *
+ * Acknowledgement of sponsorship
+ * ------------------------------
+ * This software was produced by
+ * the Stanford Linear Accelerator Center, Stanford University,
+ * under Contract DE-AC03-76SFO0515 with the Department of Energy.
+ *
+ * Government disclaimer of liability
+ * ----------------------------------
+ * Neither the United States nor the United States Department of Energy,
+ * nor any of their employees, makes any warranty, express or implied, or
+ * assumes any legal liability or responsibility for the accuracy,
+ * completeness, or usefulness of any data, apparatus, product, or process
+ * disclosed, or represents that its use would not infringe privately owned
+ * rights.
+ *
+ * Stanford disclaimer of liability
+ * --------------------------------
+ * Stanford University makes no representations or warranties, express or
+ * implied, nor assumes any liability for the use of this software.
+ *
+ * Stanford disclaimer of copyright
+ * --------------------------------
+ * Stanford University, owner of the copyright, hereby disclaims its
+ * copyright and all other rights in this software. Hence, anyone may
+ * freely use it for any purpose without restriction.
+ *
+ * Maintenance of notices
+ * ----------------------
+ * In the interest of clarity regarding the origin and status of this
+ * SLAC software, this and all the preceding Stanford University notices
+ * are to remain affixed to any copy or derivative of this software made
+ * or distributed by the recipient and are to be affixed to any copy of
+ * software made or distributed by the recipient that contains a copy or
+ * derivative of this software.
+ *
+ * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
+ *
+ * Copyright (c) 2009 embedded brains GmbH and others.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <termios.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include <rtems/telnetd.h>
+
+#include "des.h"
+#include <rtems/passwd.h>
+
+/**
+ * @brief Standard Telnet login check that uses DES to encrypt the passphrase.
+ *
+ * Takes a @a passphrase, encrypts it and compares it to the encrypted
+ * passphrase in the @c TELNETD_PASSWD environment variable. No password is
+ * required if @c TELNETD_PASSWD is unset. The argument @a user is ignored.
+ */
+bool rtems_telnetd_login_check(
+ const char *user,
+ const char *passphrase
+)
+{
+ char *pw = getenv( "TELNETD_PASSWD");
+ char cryptbuf [21];
+ char salt [3];
+
+ if (pw == NULL || strlen( pw) == 0) {
+ #ifdef TELNETD_DEFAULT_PASSWD
+ pw = TELNETD_DEFAULT_PASSWD;
+ #else
+ return true;
+ #endif
+ }
+
+ strncpy( salt, pw, 2);
+ salt [2] = '\0';
+
+ return strcmp(
+ __des_crypt_r( passphrase, salt, cryptbuf, sizeof( cryptbuf)),
+ pw
+ ) == 0;
+}
diff --git a/rtemsbsd/telnetd/des.c b/rtemsbsd/telnetd/des.c
new file mode 100644
index 00000000..1d0295a6
--- /dev/null
+++ b/rtemsbsd/telnetd/des.c
@@ -0,0 +1,873 @@
+/*
+ * FreeSec: libcrypt for NetBSD
+ *
+ * Copyright (c) 1994 David Burren
+ * All rights reserved.
+ *
+ * Ported to RTEMS and made reentrant by Till Straumann, 9/2003
+ *
+ * Adapted for FreeBSD-2.0 by Geoffrey M. Rehmet
+ * this file should now *only* export crypt(), in order to make
+ * binaries of libcrypt exportable from the USA
+ *
+ * Adapted for FreeBSD-4.0 by Mark R V Murray
+ * this file should now *only* export crypt_des(), in order to make
+ * a module that can be optionally included in libcrypt.
+ *
+ * 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. Neither the name of the author nor the names of other contributors
+ * may 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.
+ *
+ * This is an original implementation of the DES and the crypt(3) interfaces
+ * by David Burren <davidb@werj.com.au>.
+ *
+ * An excellent reference on the underlying algorithm (and related
+ * algorithms) is:
+ *
+ * B. Schneier, Applied Cryptography: protocols, algorithms,
+ * and source code in C, John Wiley & Sons, 1994.
+ *
+ * Note that in that book's description of DES the lookups for the initial,
+ * pbox, and final permutations are inverted (this has been brought to the
+ * attention of the author). A list of errata for this book has been
+ * posted to the sci.crypt newsgroup by the author and is available for FTP.
+ *
+ * ARCHITECTURE ASSUMPTIONS:
+ * It is assumed that the 8-byte arrays passed by reference can be
+ * addressed as arrays of u_int32_t's (ie. the CPU is not picky about
+ * alignment).
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define __FORCE_GLIBC
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <netinet/in.h>
+#ifndef __rtems__
+#include <pwd.h>
+#include <crypt.h>
+#endif
+#include <string.h>
+#include <stdlib.h>
+
+#include "des.h"
+
+#define REENTRANT
+/* Re-entrantify me -- all this junk needs to be in
+ * struct crypt_data to make this really reentrant... */
+
+/* TS; not really - only the stuff in Des_Context */
+static struct fixed1 {
+u_char inv_key_perm[64];
+u_char inv_comp_perm[56];
+u_char u_sbox[8][64];
+u_char un_pbox[32];
+} des1_f;
+static struct fixed2 {
+u_int32_t ip_maskl[8][256], ip_maskr[8][256];
+} des2_f;
+static struct fixed3 {
+u_int32_t fp_maskl[8][256], fp_maskr[8][256];
+} des3_f;
+static struct fixed4 {
+u_int32_t key_perm_maskl[8][128], key_perm_maskr[8][128];
+u_int32_t comp_maskl[8][128], comp_maskr[8][128];
+} des4_f;
+
+#define inv_key_perm des1_f.inv_key_perm
+#define inv_comp_perm des1_f.inv_comp_perm
+#define u_sbox des1_f.u_sbox
+#define un_pbox des1_f.un_pbox
+#define ip_maskl des2_f.ip_maskl
+#define ip_maskr des2_f.ip_maskr
+#define fp_maskl des3_f.fp_maskl
+#define fp_maskr des3_f.fp_maskr
+#define key_perm_maskl des4_f.key_perm_maskl
+#define key_perm_maskr des4_f.key_perm_maskr
+#define comp_maskl des4_f.comp_maskl
+#define comp_maskr des4_f.comp_maskr
+
+/* These need to be maintained per-process */
+struct Des_Context {
+u_int32_t en_keysl[16], en_keysr[16];
+u_int32_t de_keysl[16], de_keysr[16];
+u_int32_t saltbits;
+u_int32_t old_salt;
+u_int32_t old_rawkey0, old_rawkey1;
+};
+
+#ifndef REENTRANT
+static struct Des_Context single;
+#endif
+
+#define en_keysl des_ctx->en_keysl
+#define en_keysr des_ctx->en_keysr
+#define de_keysl des_ctx->de_keysl
+#define de_keysr des_ctx->de_keysr
+#define saltbits des_ctx->saltbits
+#define old_salt des_ctx->old_salt
+#define old_rawkey0 des_ctx->old_rawkey0
+#define old_rawkey1 des_ctx->old_rawkey1
+
+/* Static stuff that stays resident and doesn't change after
+ * being initialized, and therefore doesn't need to be made
+ * reentrant. */
+static u_char init_perm[64], final_perm[64];
+static u_char m_sbox[4][4096];
+static u_int32_t psbox[4][256];
+
+
+
+
+/* A pile of data */
+static const u_char ascii64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+static const u_char IP[64] = {
+ 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
+ 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
+ 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
+ 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
+};
+
+static const u_char key_perm[56] = {
+ 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
+ 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
+ 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
+ 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
+};
+
+static const u_char key_shifts[16] = {
+ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+};
+
+static const u_char comp_perm[48] = {
+ 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10,
+ 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2,
+ 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
+ 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
+};
+
+/*
+ * No E box is used, as it's replaced by some ANDs, shifts, and ORs.
+ */
+
+static const u_char sbox[8][64] = {
+ {
+ 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
+ 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
+ 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
+ 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
+ },
+ {
+ 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
+ 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
+ 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
+ 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
+ },
+ {
+ 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
+ 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
+ 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
+ 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
+ },
+ {
+ 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
+ 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
+ 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
+ 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
+ },
+ {
+ 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
+ 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
+ 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
+ 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
+ },
+ {
+ 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
+ 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
+ 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
+ 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
+ },
+ {
+ 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
+ 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
+ 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
+ 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
+ },
+ {
+ 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
+ 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
+ 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
+ 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
+ }
+};
+
+static const u_char pbox[32] = {
+ 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
+ 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
+};
+
+static const u_int32_t bits32[32] =
+{
+ 0x80000000, 0x40000000, 0x20000000, 0x10000000,
+ 0x08000000, 0x04000000, 0x02000000, 0x01000000,
+ 0x00800000, 0x00400000, 0x00200000, 0x00100000,
+ 0x00080000, 0x00040000, 0x00020000, 0x00010000,
+ 0x00008000, 0x00004000, 0x00002000, 0x00001000,
+ 0x00000800, 0x00000400, 0x00000200, 0x00000100,
+ 0x00000080, 0x00000040, 0x00000020, 0x00000010,
+ 0x00000008, 0x00000004, 0x00000002, 0x00000001
+};
+
+static const u_char bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
+static const u_int32_t *bits28, *bits24;
+
+
+static int
+ascii_to_bin(char ch)
+{
+ if (ch > 'z')
+ return(0);
+ if (ch >= 'a')
+ return(ch - 'a' + 38);
+ if (ch > 'Z')
+ return(0);
+ if (ch >= 'A')
+ return(ch - 'A' + 12);
+ if (ch > '9')
+ return(0);
+ if (ch >= '.')
+ return(ch - '.');
+ return(0);
+}
+
+static struct Des_Context *
+des_ctx_init(void)
+{
+struct Des_Context *des_ctx;
+#ifdef REENTRANT
+ des_ctx = malloc(sizeof(*des_ctx));
+#else
+ des_ctx = &single;
+#endif
+ old_rawkey0 = old_rawkey1 = 0L;
+ saltbits = 0L;
+ old_salt = 0L;
+
+ return des_ctx;
+}
+
+static void
+des_init(void)
+{
+ int i, j, b, k, inbit, obit;
+ u_int32_t *p, *il, *ir, *fl, *fr;
+ static int des_initialised = 0;
+
+ if (des_initialised==1)
+ return;
+
+#ifndef REENTRANT
+ des_ctx_init();
+#endif
+
+ bits24 = (bits28 = bits32 + 4) + 4;
+
+ /*
+ * Invert the S-boxes, reordering the input bits.
+ */
+ for (i = 0; i < 8; i++)
+ for (j = 0; j < 64; j++) {
+ b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf);
+ u_sbox[i][j] = sbox[i][b];
+ }
+
+ /*
+ * Convert the inverted S-boxes into 4 arrays of 8 bits.
+ * Each will handle 12 bits of the S-box input.
+ */
+ for (b = 0; b < 4; b++)
+ for (i = 0; i < 64; i++)
+ for (j = 0; j < 64; j++)
+ m_sbox[b][(i << 6) | j] =
+ (u_char)((u_sbox[(b << 1)][i] << 4) |
+ u_sbox[(b << 1) + 1][j]);
+
+ /*
+ * Set up the initial & final permutations into a useful form, and
+ * initialise the inverted key permutation.
+ */
+ for (i = 0; i < 64; i++) {
+ init_perm[final_perm[i] = IP[i] - 1] = (u_char)i;
+ inv_key_perm[i] = 255;
+ }
+
+ /*
+ * Invert the key permutation and initialise the inverted key
+ * compression permutation.
+ */
+ for (i = 0; i < 56; i++) {
+ inv_key_perm[key_perm[i] - 1] = (u_char)i;
+ inv_comp_perm[i] = 255;
+ }
+
+ /*
+ * Invert the key compression permutation.
+ */
+ for (i = 0; i < 48; i++) {
+ inv_comp_perm[comp_perm[i] - 1] = (u_char)i;
+ }
+
+ /*
+ * Set up the OR-mask arrays for the initial and final permutations,
+ * and for the key initial and compression permutations.
+ */
+ for (k = 0; k < 8; k++) {
+ for (i = 0; i < 256; i++) {
+ *(il = &ip_maskl[k][i]) = 0L;
+ *(ir = &ip_maskr[k][i]) = 0L;
+ *(fl = &fp_maskl[k][i]) = 0L;
+ *(fr = &fp_maskr[k][i]) = 0L;
+ for (j = 0; j < 8; j++) {
+ inbit = 8 * k + j;
+ if (i & bits8[j]) {
+ if ((obit = init_perm[inbit]) < 32)
+ *il |= bits32[obit];
+ else
+ *ir |= bits32[obit-32];
+ if ((obit = final_perm[inbit]) < 32)
+ *fl |= bits32[obit];
+ else
+ *fr |= bits32[obit - 32];
+ }
+ }
+ }
+ for (i = 0; i < 128; i++) {
+ *(il = &key_perm_maskl[k][i]) = 0L;
+ *(ir = &key_perm_maskr[k][i]) = 0L;
+ for (j = 0; j < 7; j++) {
+ inbit = 8 * k + j;
+ if (i & bits8[j + 1]) {
+ if ((obit = inv_key_perm[inbit]) == 255)
+ continue;
+ if (obit < 28)
+ *il |= bits28[obit];
+ else
+ *ir |= bits28[obit - 28];
+ }
+ }
+ *(il = &comp_maskl[k][i]) = 0L;
+ *(ir = &comp_maskr[k][i]) = 0L;
+ for (j = 0; j < 7; j++) {
+ inbit = 7 * k + j;
+ if (i & bits8[j + 1]) {
+ if ((obit=inv_comp_perm[inbit]) == 255)
+ continue;
+ if (obit < 24)
+ *il |= bits24[obit];
+ else
+ *ir |= bits24[obit - 24];
+ }
+ }
+ }
+ }
+
+ /*
+ * Invert the P-box permutation, and convert into OR-masks for
+ * handling the output of the S-box arrays setup above.
+ */
+ for (i = 0; i < 32; i++)
+ un_pbox[pbox[i] - 1] = (u_char)i;
+
+ for (b = 0; b < 4; b++)
+ for (i = 0; i < 256; i++) {
+ *(p = &psbox[b][i]) = 0L;
+ for (j = 0; j < 8; j++) {
+ if (i & bits8[j])
+ *p |= bits32[un_pbox[8 * b + j]];
+ }
+ }
+
+ des_initialised = 1;
+}
+
+
+static void
+setup_salt(long salt, struct Des_Context *des_ctx)
+{
+ u_int32_t obit, saltbit;
+ int i;
+
+ if (salt == old_salt)
+ return;
+ old_salt = salt;
+
+ saltbits = 0L;
+ saltbit = 1;
+ obit = 0x800000;
+ for (i = 0; i < 24; i++) {
+ if (salt & saltbit)
+ saltbits |= obit;
+ saltbit <<= 1;
+ obit >>= 1;
+ }
+}
+
+
+static int
+des_setkey(const char *key, struct Des_Context *des_ctx)
+{
+ u_int32_t k0, k1, rawkey0, rawkey1;
+ int shifts, round;
+
+ des_init();
+
+ rawkey0 = ntohl(*(const u_int32_t *) key);
+ rawkey1 = ntohl(*(const u_int32_t *) (key + 4));
+
+ if ((rawkey0 | rawkey1)
+ && rawkey0 == old_rawkey0
+ && rawkey1 == old_rawkey1) {
+ /*
+ * Already setup for this key.
+ * This optimisation fails on a zero key (which is weak and
+ * has bad parity anyway) in order to simplify the starting
+ * conditions.
+ */
+ return(0);
+ }
+ old_rawkey0 = rawkey0;
+ old_rawkey1 = rawkey1;
+
+ /*
+ * Do key permutation and split into two 28-bit subkeys.
+ */
+ k0 = key_perm_maskl[0][rawkey0 >> 25]
+ | key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
+ | key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
+ | key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
+ | key_perm_maskl[4][rawkey1 >> 25]
+ | key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
+ | key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
+ | key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
+ k1 = key_perm_maskr[0][rawkey0 >> 25]
+ | key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
+ | key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
+ | key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
+ | key_perm_maskr[4][rawkey1 >> 25]
+ | key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
+ | key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
+ | key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
+ /*
+ * Rotate subkeys and do compression permutation.
+ */
+ shifts = 0;
+ for (round = 0; round < 16; round++) {
+ u_int32_t t0, t1;
+
+ shifts += key_shifts[round];
+
+ t0 = (k0 << shifts) | (k0 >> (28 - shifts));
+ t1 = (k1 << shifts) | (k1 >> (28 - shifts));
+
+ de_keysl[15 - round] =
+ en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
+ | comp_maskl[1][(t0 >> 14) & 0x7f]
+ | comp_maskl[2][(t0 >> 7) & 0x7f]
+ | comp_maskl[3][t0 & 0x7f]
+ | comp_maskl[4][(t1 >> 21) & 0x7f]
+ | comp_maskl[5][(t1 >> 14) & 0x7f]
+ | comp_maskl[6][(t1 >> 7) & 0x7f]
+ | comp_maskl[7][t1 & 0x7f];
+
+ de_keysr[15 - round] =
+ en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f]
+ | comp_maskr[1][(t0 >> 14) & 0x7f]
+ | comp_maskr[2][(t0 >> 7) & 0x7f]
+ | comp_maskr[3][t0 & 0x7f]
+ | comp_maskr[4][(t1 >> 21) & 0x7f]
+ | comp_maskr[5][(t1 >> 14) & 0x7f]
+ | comp_maskr[6][(t1 >> 7) & 0x7f]
+ | comp_maskr[7][t1 & 0x7f];
+ }
+ return(0);
+}
+
+
+static int
+do_des( u_int32_t l_in, u_int32_t r_in, u_int32_t *l_out, u_int32_t *r_out, int count, struct Des_Context *des_ctx)
+{
+ /*
+ * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
+ */
+ u_int32_t l, r, *kl, *kr, *kl1, *kr1;
+ u_int32_t f, r48l, r48r;
+ int round;
+
+ if (count == 0) {
+ return(1);
+ } else if (count > 0) {
+ /*
+ * Encrypting
+ */
+ kl1 = en_keysl;
+ kr1 = en_keysr;
+ } else {
+ /*
+ * Decrypting
+ */
+ count = -count;
+ kl1 = de_keysl;
+ kr1 = de_keysr;
+ }
+
+ /*
+ * Do initial permutation (IP).
+ */
+ l = ip_maskl[0][l_in >> 24]
+ | ip_maskl[1][(l_in >> 16) & 0xff]
+ | ip_maskl[2][(l_in >> 8) & 0xff]
+ | ip_maskl[3][l_in & 0xff]
+ | ip_maskl[4][r_in >> 24]
+ | ip_maskl[5][(r_in >> 16) & 0xff]
+ | ip_maskl[6][(r_in >> 8) & 0xff]
+ | ip_maskl[7][r_in & 0xff];
+ r = ip_maskr[0][l_in >> 24]
+ | ip_maskr[1][(l_in >> 16) & 0xff]
+ | ip_maskr[2][(l_in >> 8) & 0xff]
+ | ip_maskr[3][l_in & 0xff]
+ | ip_maskr[4][r_in >> 24]
+ | ip_maskr[5][(r_in >> 16) & 0xff]
+ | ip_maskr[6][(r_in >> 8) & 0xff]
+ | ip_maskr[7][r_in & 0xff];
+
+ while (count--) {
+ /*
+ * Do each round.
+ */
+ kl = kl1;
+ kr = kr1;
+ round = 16;
+ while (round--) {
+ /*
+ * Expand R to 48 bits (simulate the E-box).
+ */
+ r48l = ((r & 0x00000001) << 23)
+ | ((r & 0xf8000000) >> 9)
+ | ((r & 0x1f800000) >> 11)
+ | ((r & 0x01f80000) >> 13)
+ | ((r & 0x001f8000) >> 15);
+
+ r48r = ((r & 0x0001f800) << 7)
+ | ((r & 0x00001f80) << 5)
+ | ((r & 0x000001f8) << 3)
+ | ((r & 0x0000001f) << 1)
+ | ((r & 0x80000000) >> 31);
+ /*
+ * Do salting for crypt() and friends, and
+ * XOR with the permuted key.
+ */
+ f = (r48l ^ r48r) & saltbits;
+ r48l ^= f ^ *kl++;
+ r48r ^= f ^ *kr++;
+ /*
+ * Do sbox lookups (which shrink it back to 32 bits)
+ * and do the pbox permutation at the same time.
+ */
+ f = psbox[0][m_sbox[0][r48l >> 12]]
+ | psbox[1][m_sbox[1][r48l & 0xfff]]
+ | psbox[2][m_sbox[2][r48r >> 12]]
+ | psbox[3][m_sbox[3][r48r & 0xfff]];
+ /*
+ * Now that we've permuted things, complete f().
+ */
+ f ^= l;
+ l = r;
+ r = f;
+ }
+ r = l;
+ l = f;
+ }
+ /*
+ * Do final permutation (inverse of IP).
+ */
+ *l_out = fp_maskl[0][l >> 24]
+ | fp_maskl[1][(l >> 16) & 0xff]
+ | fp_maskl[2][(l >> 8) & 0xff]
+ | fp_maskl[3][l & 0xff]
+ | fp_maskl[4][r >> 24]
+ | fp_maskl[5][(r >> 16) & 0xff]
+ | fp_maskl[6][(r >> 8) & 0xff]
+ | fp_maskl[7][r & 0xff];
+ *r_out = fp_maskr[0][l >> 24]
+ | fp_maskr[1][(l >> 16) & 0xff]
+ | fp_maskr[2][(l >> 8) & 0xff]
+ | fp_maskr[3][l & 0xff]
+ | fp_maskr[4][r >> 24]
+ | fp_maskr[5][(r >> 16) & 0xff]
+ | fp_maskr[6][(r >> 8) & 0xff]
+ | fp_maskr[7][r & 0xff];
+ return(0);
+}
+
+
+#if 0
+static int
+des_cipher(const char *in, char *out, u_int32_t salt, int count)
+{
+ u_int32_t l_out, r_out, rawl, rawr;
+ int retval;
+ union {
+ u_int32_t *ui32;
+ const char *c;
+ } trans;
+
+ des_init();
+
+ setup_salt(salt);
+
+ trans.c = in;
+ rawl = ntohl(*trans.ui32++);
+ rawr = ntohl(*trans.ui32);
+
+ retval = do_des(rawl, rawr, &l_out, &r_out, count);
+
+ trans.c = out;
+ *trans.ui32++ = htonl(l_out);
+ *trans.ui32 = htonl(r_out);
+ return(retval);
+}
+#endif
+
+
+#ifndef REENTRANT
+void
+setkey(const char *key)
+{
+ int i, j;
+ u_int32_t packed_keys[2];
+ u_char *p;
+
+ p = (u_char *) packed_keys;
+
+ for (i = 0; i < 8; i++) {
+ p[i] = 0;
+ for (j = 0; j < 8; j++)
+ if (*key++ & 1)
+ p[i] |= bits8[j];
+ }
+ des_setkey(p, &single);
+}
+#endif
+
+
+#ifndef REENTRANT
+void
+encrypt(char *block, int flag)
+{
+ u_int32_t io[2];
+ u_char *p;
+ int i, j;
+
+ des_init();
+
+ setup_salt(0L, &single);
+ p = block;
+ for (i = 0; i < 2; i++) {
+ io[i] = 0L;
+ for (j = 0; j < 32; j++)
+ if (*p++ & 1)
+ io[i] |= bits32[j];
+ }
+ do_des(io[0], io[1], io, io + 1, flag ? -1 : 1, &single);
+ for (i = 0; i < 2; i++)
+ for (j = 0; j < 32; j++)
+ block[(i << 5) | j] = (io[i] & bits32[j]) ? 1 : 0;
+}
+
+#endif
+
+char *
+__des_crypt_r(const char *key, const char *setting, char *output, int sz)
+{
+ char *rval = 0;
+ struct Des_Context *des_ctx;
+ u_int32_t count, salt, l, r0, r1, keybuf[2];
+ u_char *p, *q;
+
+ if (sz < 21)
+ return NULL;
+
+ des_init();
+ des_ctx = des_ctx_init();
+
+ /*
+ * Copy the key, shifting each character up by one bit
+ * and padding with zeros.
+ */
+ q = (u_char *)keybuf;
+ while (q - (u_char *)keybuf - 8) {
+ *q++ = *key << 1;
+ if (*(q - 1))
+ key++;
+ }
+ if (des_setkey((char *)keybuf, des_ctx))
+ goto bailout;
+
+#if 0
+ if (*setting == _PASSWORD_EFMT1) {
+ int i;
+ /*
+ * "new"-style:
+ * setting - underscore, 4 bytes of count, 4 bytes of salt
+ * key - unlimited characters
+ */
+ for (i = 1, count = 0L; i < 5; i++)
+ count |= ascii_to_bin(setting[i]) << ((i - 1) * 6);
+
+ for (i = 5, salt = 0L; i < 9; i++)
+ salt |= ascii_to_bin(setting[i]) << ((i - 5) * 6);
+
+ while (*key) {
+ /*
+ * Encrypt the key with itself.
+ */
+ if (des_cipher((char *)keybuf, (char *)keybuf, 0L, 1))
+ goto bailout;
+ /*
+ * And XOR with the next 8 characters of the key.
+ */
+ q = (u_char *)keybuf;
+ while (q - (u_char *)keybuf - 8 && *key)
+ *q++ ^= *key++ << 1;
+
+ if (des_setkey((char *)keybuf))
+ goto bailout;
+ }
+ strncpy(output, setting, 9);
+
+ /*
+ * Double check that we weren't given a short setting.
+ * If we were, the above code will probably have created
+ * wierd values for count and salt, but we don't really care.
+ * Just make sure the output string doesn't have an extra
+ * NUL in it.
+ */
+ output[9] = '\0';
+ p = (u_char *)output + strlen(output);
+ } else
+#endif
+ {
+ /*
+ * "old"-style:
+ * setting - 2 bytes of salt
+ * key - up to 8 characters
+ */
+ count = 25;
+
+ salt = (ascii_to_bin(setting[1]) << 6)
+ | ascii_to_bin(setting[0]);
+
+ output[0] = setting[0];
+ /*
+ * If the encrypted password that the salt was extracted from
+ * is only 1 character long, the salt will be corrupted. We
+ * need to ensure that the output string doesn't have an extra
+ * NUL in it!
+ */
+ output[1] = setting[1] ? setting[1] : output[0];
+
+ p = (u_char *)output + 2;
+ }
+ setup_salt(salt, des_ctx);
+ /*
+ * Do it.
+ */
+ if (do_des(0L, 0L, &r0, &r1, (int)count, des_ctx))
+ goto bailout;
+ /*
+ * Now encode the result...
+ */
+ l = (r0 >> 8);
+ *p++ = ascii64[(l >> 18) & 0x3f];
+ *p++ = ascii64[(l >> 12) & 0x3f];
+ *p++ = ascii64[(l >> 6) & 0x3f];
+ *p++ = ascii64[l & 0x3f];
+
+ l = (r0 << 16) | ((r1 >> 16) & 0xffff);
+ *p++ = ascii64[(l >> 18) & 0x3f];
+ *p++ = ascii64[(l >> 12) & 0x3f];
+ *p++ = ascii64[(l >> 6) & 0x3f];
+ *p++ = ascii64[l & 0x3f];
+
+ l = r1 << 2;
+ *p++ = ascii64[(l >> 12) & 0x3f];
+ *p++ = ascii64[(l >> 6) & 0x3f];
+ *p++ = ascii64[l & 0x3f];
+ *p = 0;
+
+ rval = output;
+bailout:
+ free(des_ctx);
+ return rval;
+}
+
+#ifdef DEBUG
+
+void
+des_snap(void **pf, void **pd)
+{
+ uint8* pfc;
+ *pf = malloc(sizeof(struct fixed1) + sizeof(struct fixed2) + sizeof(struct fixed3) + sizeof(struct fixed4));
+ pfc = *pf;
+ memcpy(pfc, &des1_f, sizeof(des1_f));
+ pfc += sizeof(des1_f);
+ memcpy(pfc, &des2_f, sizeof(des2_f));
+ pfc += sizeof(des2_f);
+ memcpy(pfc, &des3_f, sizeof(des3_f));
+ pfc += sizeof(des3_f);
+ memcpy(pfc, &des4_f, sizeof(des4_f));
+// *pd = malloc(sizeof(struct Des_Context));
+// memcpy(*pd, &des_ctx, sizeof(des_ctx));
+}
+
+void
+des_check(void *pf, void *pd)
+{
+ uint8* pfc1, pfc2, pfc3, pfc4;
+ pfc1 = pf;
+ pfc2 = pfc1 + sizeof(des1_f);
+ pfc3 = pfc2 + sizeof(des2_f);
+ pfc4 = pfc3 + sizeof(des3_f);
+ printf("Fixed: do%s differ"/*", Context: do%s differ"*/"\n",
+ (memcmp(pfc1, &des1_f, sizeof(des1_f)) ||
+ memcmp(pfc2, &des2_f, sizeof(des2_f)) ||
+ memcmp(pfc3, &des4_f, sizeof(des3_f)) ||
+ memcmp(pfc4, &des4_f, sizeof(des4_f))) ? "" : "nt");
+}
+
+#endif
diff --git a/rtemsbsd/telnetd/des.h b/rtemsbsd/telnetd/des.h
new file mode 100644
index 00000000..382dab7a
--- /dev/null
+++ b/rtemsbsd/telnetd/des.h
@@ -0,0 +1 @@
+char *__des_crypt_r(const char *, const char *, char *, int);
diff --git a/rtemsbsd/telnetd/genpw.c b/rtemsbsd/telnetd/genpw.c
new file mode 100644
index 00000000..1cb30bc6
--- /dev/null
+++ b/rtemsbsd/telnetd/genpw.c
@@ -0,0 +1,79 @@
+/*
+ * Authorship
+ * ----------
+ * This software was created by
+ * Till Straumann <strauman@slac.stanford.edu>, 2003-2007
+ * Stanford Linear Accelerator Center, Stanford University.
+ *
+ * Acknowledgement of sponsorship
+ * ------------------------------
+ * This software was produced by
+ * the Stanford Linear Accelerator Center, Stanford University,
+ * under Contract DE-AC03-76SFO0515 with the Department of Energy.
+ *
+ * Government disclaimer of liability
+ * ----------------------------------
+ * Neither the United States nor the United States Department of Energy,
+ * nor any of their employees, makes any warranty, express or implied, or
+ * assumes any legal liability or responsibility for the accuracy,
+ * completeness, or usefulness of any data, apparatus, product, or process
+ * disclosed, or represents that its use would not infringe privately owned
+ * rights.
+ *
+ * Stanford disclaimer of liability
+ * --------------------------------
+ * Stanford University makes no representations or warranties, express or
+ * implied, nor assumes any liability for the use of this software.
+ *
+ * Stanford disclaimer of copyright
+ * --------------------------------
+ * Stanford University, owner of the copyright, hereby disclaims its
+ * copyright and all other rights in this software. Hence, anyone may
+ * freely use it for any purpose without restriction.
+ *
+ * Maintenance of notices
+ * ----------------------
+ * In the interest of clarity regarding the origin and status of this
+ * SLAC software, this and all the preceding Stanford University notices
+ * are to remain affixed to any copy or derivative of this software made
+ * or distributed by the recipient and are to be affixed to any copy of
+ * software made or distributed by the recipient that contains a copy or
+ * derivative of this software.
+ *
+ * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <crypt.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static void
+usage(char *nm)
+{
+ fprintf(stderr,"Usage: %s [-h] [-s salt] cleartext_password\n", nm);
+}
+
+int
+main(int argc, char **argv)
+{
+int ch;
+char *salt="td";
+ while ( (ch=getopt(argc, argv, "hs:")) >=0 ) {
+ switch (ch) {
+ default: fprintf(stderr,"Unknown Option '%c'\n",ch);
+ case 'h': usage(argv[0]);
+ return 0;
+ case 's': salt=optarg;
+ break;
+ }
+ }
+ if ( optind >= argc ) {
+ usage(argv[0]);
+ return 1;
+ }
+ printf("#define TELNETD_DEFAULT_PASSWD \"%s\"\n",crypt(argv[optind],salt));
+}
diff --git a/rtemsbsd/telnetd/pty.c b/rtemsbsd/telnetd/pty.c
new file mode 100644
index 00000000..a593bbd2
--- /dev/null
+++ b/rtemsbsd/telnetd/pty.c
@@ -0,0 +1,401 @@
+/*
+ * /dev/ptyXX (Support for pseudo-terminals)
+ *
+ * Original Author: Fernando RUIZ CASAS (fernando.ruiz@ctv.es)
+ * May 2001
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Till Straumann <strauman@slac.stanford.edu>
+ *
+ * - converted into a loadable module
+ * - NAWS support / ioctls for querying/setting the window
+ * size added.
+ * - don't delete the running task when the connection
+ * is closed. Rather let 'read()' return a 0 count so
+ * they may cleanup. Some magic hack works around termios
+ * limitation.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define DEBUG_WH (1<<0)
+#define DEBUG_DETAIL (1<<1)
+
+/* #define DEBUG DEBUG_WH */
+
+/*-----------------------------------------*/
+#include <sys/ttycom.h>
+#include <rtems/pty.h>
+#include <rtems/seterr.h>
+#include <errno.h>
+#include <sys/socket.h>
+/*-----------------------------------------*/
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+/*-----------------------------------------*/
+#define IAC_ESC 255
+#define IAC_DONT 254
+#define IAC_DO 253
+#define IAC_WONT 252
+#define IAC_WILL 251
+#define IAC_SB 250
+#define IAC_GA 249
+#define IAC_EL 248
+#define IAC_EC 247
+#define IAC_AYT 246
+#define IAC_AO 245
+#define IAC_IP 244
+#define IAC_BRK 243
+#define IAC_DMARK 242
+#define IAC_NOP 241
+#define IAC_SE 240
+#define IAC_EOR 239
+
+#define SB_MAX RTEMS_PTY_SB_MAX
+
+static bool ptyPollInitialize(rtems_termios_tty *,
+ rtems_termios_device_context *, struct termios *,
+ rtems_libio_open_close_args_t *);
+static void ptyShutdown(rtems_termios_tty *,
+ rtems_termios_device_context *, rtems_libio_open_close_args_t *);
+static void ptyPollWrite(rtems_termios_device_context *, const char *, size_t);
+static int ptyPollRead(rtems_termios_device_context *);
+static bool ptySetAttributes(rtems_termios_device_context *,
+ const struct termios *);
+static int my_pty_control(rtems_termios_device_context *,
+ ioctl_command_t, void *);
+
+static const rtems_termios_device_handler pty_handler = {
+ .first_open = ptyPollInitialize,
+ .last_close = ptyShutdown,
+ .poll_read = ptyPollRead,
+ .write = ptyPollWrite,
+ .set_attributes = ptySetAttributes,
+ .ioctl = my_pty_control
+};
+
+static
+int send_iac(rtems_pty_context *pty, unsigned char mode, unsigned char option)
+{
+ unsigned char buf[3];
+
+ buf[0]=IAC_ESC;
+ buf[1]=mode;
+ buf[2]=option;
+ return write(pty->socket, buf, sizeof(buf));
+}
+
+const char *rtems_pty_initialize(rtems_pty_context *pty, uintptr_t unique)
+{
+ rtems_status_code sc;
+
+ memset(pty, 0, sizeof(*pty));
+ (void)snprintf(pty->name, sizeof(pty->name), "/dev/pty%" PRIuPTR, unique);
+ rtems_termios_device_context_initialize(&pty->base, "pty");
+ pty->socket = -1;
+ sc = rtems_termios_device_install(pty->name, &pty_handler, NULL, &pty->base);
+ if (sc != RTEMS_SUCCESSFUL) {
+ return NULL;
+ }
+
+ return pty->name;
+}
+
+void rtems_pty_close_socket(rtems_pty_context *pty)
+{
+ if (pty->socket >= 0) {
+ (void)close(pty->socket);
+ pty->socket = -1;
+ }
+}
+
+void rtems_pty_set_socket(rtems_pty_context *pty, int socket)
+{
+ struct timeval t;
+
+ rtems_pty_close_socket(pty);
+ pty->socket = socket;
+
+ /* set a long polling interval to save CPU time */
+ t.tv_sec=2;
+ t.tv_usec=00000;
+ (void)setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &t, sizeof(t));
+
+ /* inform the client that we will echo */
+ send_iac(pty, IAC_WILL, 1);
+}
+
+/*-----------------------------------------------------------*/
+/*
+ * The NVT terminal is negociated in PollRead and PollWrite
+ * with every BYTE sendded or received.
+ * A litle status machine in the pty_read_byte(int minor)
+ *
+ */
+static const char IAC_AYT_RSP[]="\r\nAYT? Yes, RTEMS-SHELL is here\r\n";
+static const char IAC_BRK_RSP[]="<*Break*>";
+static const char IAC_IP_RSP []="<*Interrupt*>";
+
+static int
+handleSB(rtems_pty_context *pty)
+{
+ switch (pty->sb_buf[0]) {
+ case 31: /* NAWS */
+ pty->width = (pty->sb_buf[1]<<8) + pty->sb_buf[2];
+ pty->height = (pty->sb_buf[3]<<8) + pty->sb_buf[4];
+#if DEBUG & DEBUG_WH
+ fprintf(stderr,
+ "Setting width/height to %ix%i\n",
+ pty->width,
+ pty->height);
+#endif
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int ptyPollRead(rtems_termios_device_context *base)
+{ /* Characters written to the client side*/
+ rtems_pty_context *pty = (rtems_pty_context *)base;
+ unsigned char value;
+ unsigned int omod;
+ int count;
+ int result;
+
+ count=read(pty->socket,&value,sizeof(value));
+ if (count<0)
+ return -1;
+
+ if (count<1) {
+ /* Unfortunately, there is no way of passing an EOF
+ * condition through the termios driver. Hence, we
+ * resort to an ugly hack. Setting cindex>ccount
+ * causes the termios driver to return a read count
+ * of '0' which is what we want here. We leave
+ * 'errno' untouched.
+ */
+ pty->ttyp->cindex=pty->ttyp->ccount+1;
+ return pty->ttyp->termios.c_cc[VEOF];
+ };
+
+ omod=pty->iac_mode;
+ pty->iac_mode=0;
+ switch(omod & 0xff) {
+ case IAC_ESC:
+ switch(value) {
+ case IAC_ESC :
+ /* in case this is an ESC ESC sequence in SB mode */
+ pty->iac_mode = omod>>8;
+ return IAC_ESC;
+ case IAC_DONT:
+ case IAC_DO :
+ case IAC_WONT:
+ case IAC_WILL:
+ pty->iac_mode=value;
+ return -1;
+ case IAC_SB :
+#if DEBUG & DEBUG_DETAIL
+ printk("SB\n");
+#endif
+ pty->iac_mode=value;
+ pty->sb_ind=0;
+ return -100;
+ case IAC_GA :
+ return -1;
+ case IAC_EL :
+ return 0x03; /* Ctrl-C*/
+ case IAC_EC :
+ return '\b';
+ case IAC_AYT :
+ write(pty->socket,IAC_AYT_RSP,strlen(IAC_AYT_RSP));
+ return -1;
+ case IAC_AO :
+ return -1;
+ case IAC_IP :
+ write(pty->socket,IAC_IP_RSP,strlen(IAC_IP_RSP));
+ return -1;
+ case IAC_BRK :
+ write(pty->socket,IAC_BRK_RSP,strlen(IAC_BRK_RSP));
+ return -1;
+ case IAC_DMARK:
+ return -2;
+ case IAC_NOP :
+ return -1;
+ case IAC_SE :
+#if DEBUG & DEBUG_DETAIL
+ {
+ int i;
+ printk("SE");
+ for (i=0; i<pty->sb_ind; i++)
+ printk(" %02x",pty->sb_buf[i]);
+ printk("\n");
+ }
+#endif
+ handleSB(pty);
+ return -101;
+ case IAC_EOR :
+ return -102;
+ default :
+ return -1;
+ };
+ break;
+
+ case IAC_SB:
+ pty->iac_mode=omod;
+ if (IAC_ESC==value) {
+ pty->iac_mode=(omod<<8)|value;
+ } else {
+ if (pty->sb_ind < SB_MAX)
+ pty->sb_buf[pty->sb_ind++]=value;
+ }
+ return -1;
+
+ case IAC_WILL:
+ if (value==34){
+ send_iac(pty,IAC_DONT, 34); /*LINEMODE*/
+ send_iac(pty,IAC_DO , 1); /*ECHO */
+ } else if (value==31) {
+ send_iac(pty,IAC_DO , 31); /*NAWS */
+#if DEBUG & DEBUG_DETAIL
+ printk("replied DO NAWS\n");
+#endif
+ } else {
+ send_iac(pty,IAC_DONT,value);
+ }
+ return -1;
+ case IAC_DONT:
+ return -1;
+ case IAC_DO :
+ if (value==3) {
+ send_iac(pty,IAC_WILL, 3); /* GO AHEAD*/
+ } else if (value==1) {
+ send_iac(pty,IAC_WILL, 1); /* ECHO */
+ } else {
+ send_iac(pty,IAC_WONT,value);
+ };
+ return -1;
+ case IAC_WONT:
+ if (value==1) {
+ send_iac(pty,IAC_WILL, 1);
+ } else { /* ECHO */
+ send_iac(pty,IAC_WONT,value);
+ }
+ return -1;
+ default:
+ if (value==IAC_ESC) {
+ pty->iac_mode=value;
+ return -1;
+ } else {
+ result=value;
+ if ( 0
+ /* map CRLF to CR for symmetry */
+ || ((value=='\n') && pty->last_cr)
+ /* map telnet CRNUL to CR down here */
+ || ((value==0) && pty->last_cr)
+ ) result=-1;
+ pty->last_cr=(value=='\r');
+ return result;
+ };
+ };
+ /* should never get here but keep compiler happy */
+ return -1;
+}
+
+/*-----------------------------------------------------------*/
+/* Set the 'Hardware' */
+/*-----------------------------------------------------------*/
+static bool
+ptySetAttributes(rtems_termios_device_context *base, const struct termios *t)
+{
+ rtems_pty_context *pty = (rtems_pty_context *)base;
+ pty->c_cflag = t->c_cflag;
+ return true;
+}
+/*-----------------------------------------------------------*/
+static bool
+ptyPollInitialize(rtems_termios_tty *ttyp,
+ rtems_termios_device_context *base, struct termios *t,
+ rtems_libio_open_close_args_t *args)
+{
+ rtems_pty_context *pty = (rtems_pty_context *)base;
+ pty->ttyp = ttyp;
+ pty->iac_mode = 0;
+ pty->sb_ind = 0;
+ pty->width = 0;
+ pty->height = 0;
+ return ptySetAttributes(&pty->base, t);
+}
+/*-----------------------------------------------------------*/
+static void
+ptyShutdown(rtems_termios_tty *ttyp,
+ rtems_termios_device_context *base, rtems_libio_open_close_args_t *arg)
+{
+ rtems_pty_context *pty = (rtems_pty_context *)base;
+ close(pty->socket);
+}
+/*-----------------------------------------------------------*/
+/* Write Characters into pty device */
+/*-----------------------------------------------------------*/
+static void
+ptyPollWrite(rtems_termios_device_context *base, const char *buf, size_t len)
+{
+ rtems_pty_context *pty = (rtems_pty_context *)base;
+
+ while (len > 0) {
+ ssize_t n = write(pty->socket, buf, len);
+ if (n <= 0) {
+ break;
+ }
+
+ buf += (size_t)n;
+ len -= (size_t)n;
+ }
+}
+
+static int
+my_pty_control(rtems_termios_device_context *base,
+ ioctl_command_t request, void *buffer)
+{
+ rtems_pty_context *p = (rtems_pty_context *)base;
+ struct winsize *wp = buffer;
+
+ switch (request) {
+ case TIOCGWINSZ:
+ wp->ws_row = p->height;
+ wp->ws_col = p->width;
+#if DEBUG & DEBUG_WH
+ fprintf(stderr,
+ "ioctl(TIOCGWINSZ), returning %ix%i\n",
+ wp->ws_col,
+ wp->ws_row);
+#endif
+ break;
+ case TIOCSWINSZ:
+#if DEBUG & DEBUG_WH
+ fprintf(stderr,
+ "ioctl(TIOCGWINSZ), setting %ix%i\n",
+ wp->ws_col,
+ wp->ws_row);
+#endif
+
+ p->height = wp->ws_row;
+ p->width = wp->ws_col;
+ break;
+ default:
+ rtems_set_errno_and_return_minus_one(EINVAL);
+ break;
+ }
+
+ return 0;
+}
diff --git a/rtemsbsd/telnetd/telnetd-init.c b/rtemsbsd/telnetd/telnetd-init.c
new file mode 100644
index 00000000..586aaef7
--- /dev/null
+++ b/rtemsbsd/telnetd/telnetd-init.c
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2018 embedded brains GmbH. All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/telnetd.h>
+
+rtems_status_code rtems_telnetd_initialize( void )
+{
+ return rtems_telnetd_start( &rtems_telnetd_config );
+}
diff --git a/rtemsbsd/telnetd/telnetd.c b/rtemsbsd/telnetd/telnetd.c
new file mode 100644
index 00000000..705e0956
--- /dev/null
+++ b/rtemsbsd/telnetd/telnetd.c
@@ -0,0 +1,449 @@
+/***********************************************************/
+/*
+ *
+ * The telnet DAEMON
+ *
+ * Author: 17,may 2001
+ *
+ * WORK: fernando.ruiz@ctv.es
+ * HOME: correo@fernando-ruiz.com
+ *
+ * After start the net you can start this daemon.
+ * It uses the previously inited pseudo-terminales (pty.c)
+ * getting a new terminal with getpty(). This function
+ * gives a terminal name passing a opened socket like parameter.
+ *
+ * With register_telnetd() you add a new command in the shell to start
+ * this daemon interactively. (Login in /dev/console of course)
+ *
+ * Sorry but OOB is not still implemented. (This is the first version)
+ *
+ * Till Straumann <strauman@slac.stanford.edu>
+ * - made the 'shell' interface more generic, i.e. it is now
+ * possible to have 'telnetd' run an arbitrary 'shell'
+ * program.
+ *
+ * Copyright (c) 2009, 2018 embedded brains GmbH and others.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <syslog.h>
+
+#include <rtems.h>
+#include <rtems/pty.h>
+#include <rtems/shell.h>
+#include <rtems/telnetd.h>
+#include <rtems/thread.h>
+#include <rtems/userenv.h>
+
+#define TELNETD_EVENT_SUCCESS RTEMS_EVENT_0
+
+#define TELNETD_EVENT_ERROR RTEMS_EVENT_1
+
+typedef struct telnetd_context telnetd_context;
+
+typedef struct telnetd_session {
+ rtems_pty_context pty;
+ char peername[16];
+ telnetd_context *ctx;
+ rtems_id task_id;
+ LIST_ENTRY(telnetd_session) link;
+} telnetd_session;
+
+struct telnetd_context {
+ rtems_telnetd_config_table config;
+ int server_socket;
+ rtems_id task_id;
+ rtems_mutex mtx;
+ LIST_HEAD(, telnetd_session) free_sessions;
+ telnetd_session sessions[RTEMS_ZERO_LENGTH_ARRAY];
+};
+
+typedef union {
+ struct sockaddr_in sin;
+ struct sockaddr sa;
+} telnetd_address;
+
+RTEMS_NO_RETURN static void telnetd_session_fatal_error(
+ const telnetd_context *ctx
+)
+{
+ (void)rtems_event_send(ctx->task_id, TELNETD_EVENT_ERROR);
+ rtems_task_exit();
+}
+
+static bool telnetd_login(telnetd_context *ctx, telnetd_session *session)
+{
+ bool success;
+
+ if (ctx->config.login_check == NULL) {
+ return true;
+ }
+
+ success = rtems_shell_login_prompt(
+ stdin,
+ stderr,
+ session->pty.name,
+ ctx->config.login_check
+ );
+
+ if (!success) {
+ syslog(
+ LOG_AUTHPRIV | LOG_WARNING,
+ "telnetd: too many wrong passwords entered from %s",
+ session->peername
+ );
+ }
+
+ return success;
+}
+
+static void telnetd_session_task(rtems_task_argument arg)
+{
+ rtems_status_code sc;
+ telnetd_session *session;
+ telnetd_context *ctx;
+ const char *path;
+
+ session = (telnetd_session *) arg;
+ ctx = session->ctx;
+
+ sc = rtems_libio_set_private_env();
+ if (sc != RTEMS_SUCCESSFUL) {
+ telnetd_session_fatal_error(ctx);
+ }
+
+ path = rtems_pty_get_path(&session->pty);
+
+ stdin = fopen(path, "r+");
+ if (stdin == NULL) {
+ telnetd_session_fatal_error(ctx);
+ }
+
+ stdout = fopen(path, "r+");
+ if (stdout == NULL) {
+ telnetd_session_fatal_error(ctx);
+ }
+
+ stderr = fopen(path, "r+");
+ if (stderr == NULL) {
+ telnetd_session_fatal_error(ctx);
+ }
+
+ (void)rtems_event_send(ctx->task_id, TELNETD_EVENT_SUCCESS);
+
+ while (true) {
+ rtems_event_set events;
+
+ (void)rtems_event_system_receive(
+ RTEMS_EVENT_SYSTEM_SERVER,
+ RTEMS_WAIT | RTEMS_EVENT_ALL,
+ RTEMS_NO_TIMEOUT,
+ &events
+ );
+
+ syslog(
+ LOG_DAEMON | LOG_INFO,
+ "telnetd: accepted connection from %s on %s",
+ session->peername,
+ path
+ );
+
+ if (telnetd_login(ctx, session)) {
+ (*ctx->config.command)(session->pty.name, ctx->config.arg);
+ }
+
+ syslog(
+ LOG_DAEMON | LOG_INFO,
+ "telnetd: releasing connection from %s on %s",
+ session->peername,
+ path
+ );
+
+ rtems_pty_close_socket(&session->pty);
+
+ rtems_mutex_lock(&ctx->mtx);
+ LIST_INSERT_HEAD(&ctx->free_sessions, session, link);
+ rtems_mutex_unlock(&ctx->mtx);
+ }
+}
+
+static void telnetd_sleep_after_error(void)
+{
+ /* If something went wrong, sleep for some time */
+ rtems_task_wake_after(10 * rtems_clock_get_ticks_per_second());
+}
+
+static void telnetd_server_task(rtems_task_argument arg)
+{
+ telnetd_context *ctx;
+
+ ctx = (telnetd_context *) arg;
+
+ while (true) {
+ telnetd_address peer;
+ socklen_t address_len;
+ int session_socket;
+ telnetd_session *session;
+
+ address_len = sizeof(peer.sin);
+ session_socket = accept(ctx->server_socket, &peer.sa, &address_len);
+ if (session_socket < 0) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot accept session");
+ telnetd_sleep_after_error();
+ continue;
+ };
+
+ rtems_mutex_lock(&ctx->mtx);
+ session = LIST_FIRST(&ctx->free_sessions);
+
+ if (session == NULL) {
+ rtems_mutex_unlock(&ctx->mtx);
+
+ (void)close(session_socket);
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: no free session available");
+ telnetd_sleep_after_error();
+ continue;
+ }
+
+ LIST_REMOVE(session, link);
+ rtems_mutex_unlock(&ctx->mtx);
+
+ rtems_pty_set_socket(&session->pty, session_socket);
+
+ if (
+ inet_ntop(
+ AF_INET,
+ &peer.sin.sin_addr,
+ session->peername,
+ sizeof(session->peername)
+ ) == NULL
+ ) {
+ strlcpy(session->peername, "<UNKNOWN>", sizeof(session->peername));
+ }
+
+ (void)rtems_event_system_send(session->task_id, RTEMS_EVENT_SYSTEM_SERVER);
+ }
+}
+
+static void telnetd_destroy_context(telnetd_context *ctx)
+{
+ telnetd_session *session;
+
+ LIST_FOREACH(session, &ctx->free_sessions, link) {
+ if (session->task_id != 0) {
+ (void)rtems_task_delete(session->task_id);
+ }
+
+ (void)unlink(rtems_pty_get_path(&session->pty));
+ }
+
+ if (ctx->server_socket >= 0) {
+ (void)close(ctx->server_socket);
+ }
+
+ rtems_mutex_destroy(&ctx->mtx);
+ free(ctx);
+}
+
+static rtems_status_code telnetd_create_server_socket(telnetd_context *ctx)
+{
+ telnetd_address srv;
+ socklen_t address_len;
+ int enable;
+
+ ctx->server_socket = socket(PF_INET, SOCK_STREAM, 0);
+ if (ctx->server_socket < 0) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot create server socket");
+ return RTEMS_UNSATISFIED;
+ }
+
+ enable = 1;
+ (void)setsockopt(
+ ctx->server_socket,
+ SOL_SOCKET,
+ SO_KEEPALIVE,
+ &enable,
+ sizeof(enable)
+ );
+
+ memset(&srv, 0, sizeof(srv));
+ srv.sin.sin_family = AF_INET;
+ srv.sin.sin_port = htons(ctx->config.port);
+ address_len = sizeof(srv.sin);
+
+ if (bind(ctx->server_socket, &srv.sa, address_len) != 0) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot bind server socket");
+ return RTEMS_RESOURCE_IN_USE;
+ };
+
+ if (listen(ctx->server_socket, ctx->config.client_maximum) != 0) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot listen on server socket");
+ return RTEMS_UNSATISFIED;
+ };
+
+ return RTEMS_SUCCESSFUL;
+}
+
+static rtems_status_code telnetd_create_session_tasks(telnetd_context *ctx)
+{
+ uint16_t i;
+
+ ctx->task_id = rtems_task_self();
+
+ for (i = 0; i < ctx->config.client_maximum; ++i) {
+ telnetd_session *session;
+ rtems_status_code sc;
+ const char *path;
+ rtems_event_set events;
+
+ session = &ctx->sessions[i];
+ session->ctx = ctx;
+ rtems_mutex_init(&ctx->mtx, "Telnet");
+ LIST_INSERT_HEAD(&ctx->free_sessions, session, link);
+
+ sc = rtems_task_create(
+ rtems_build_name('T', 'N', 'T', 'a' + i % 26),
+ ctx->config.priority,
+ ctx->config.stack_size,
+ RTEMS_DEFAULT_MODES,
+ RTEMS_FLOATING_POINT,
+ &session->task_id
+ );
+ if (sc != RTEMS_SUCCESSFUL) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot create session task");
+ return RTEMS_UNSATISFIED;
+ }
+
+ path = rtems_pty_initialize(&session->pty, i);
+ if (path == NULL) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot create session PTY");
+ return RTEMS_UNSATISFIED;
+ }
+
+ (void)rtems_task_start(
+ session->task_id,
+ telnetd_session_task,
+ (rtems_task_argument) session
+ );
+
+ (void)rtems_event_receive(
+ TELNETD_EVENT_SUCCESS | TELNETD_EVENT_ERROR,
+ RTEMS_WAIT | RTEMS_EVENT_ANY,
+ RTEMS_NO_TIMEOUT,
+ &events
+ );
+
+ if ((events & TELNETD_EVENT_ERROR) != 0) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot initialize session task");
+ return RTEMS_UNSATISFIED;
+ }
+ }
+
+ return RTEMS_SUCCESSFUL;
+}
+
+rtems_status_code rtems_telnetd_start(const rtems_telnetd_config_table* config)
+{
+ telnetd_context *ctx;
+ rtems_status_code sc;
+ uint16_t client_maximum;
+
+ if (config->command == NULL) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: configuration with invalid command");
+ return RTEMS_INVALID_ADDRESS;
+ }
+
+ if (config->client_maximum == 0) {
+ client_maximum = 5;
+ } else {
+ client_maximum = config->client_maximum;
+ }
+
+ ctx = calloc(
+ 1,
+ sizeof(*ctx) + client_maximum * sizeof(ctx->sessions[0])
+ );
+ if (ctx == NULL) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot allocate server context");
+ return RTEMS_UNSATISFIED;
+ }
+
+ ctx->config = *config;
+ ctx->config.client_maximum = client_maximum;
+ ctx->server_socket = -1;
+ LIST_INIT(&ctx->free_sessions);
+
+ if (ctx->config.priority == 0) {
+ ctx->config.priority = 100;
+ }
+
+ /* Check stack size */
+ if (ctx->config.stack_size == 0) {
+ ctx->config.stack_size = (size_t)32 * 1024;
+ }
+
+ if (ctx->config.port == 0) {
+ ctx->config.port = 23;
+ }
+
+ sc = telnetd_create_server_socket(ctx);
+ if (sc != RTEMS_SUCCESSFUL) {
+ telnetd_destroy_context(ctx);
+ return sc;
+ }
+
+ sc = telnetd_create_session_tasks(ctx);
+ if (sc != RTEMS_SUCCESSFUL) {
+ telnetd_destroy_context(ctx);
+ return sc;
+ }
+
+ sc = rtems_task_create(
+ rtems_build_name('T', 'N', 'T', 'D'),
+ ctx->config.priority,
+ RTEMS_MINIMUM_STACK_SIZE,
+ RTEMS_DEFAULT_MODES,
+ RTEMS_FLOATING_POINT,
+ &ctx->task_id
+ );
+ if (sc != RTEMS_SUCCESSFUL) {
+ syslog(LOG_DAEMON | LOG_ERR, "telnetd: cannot create server task");
+ telnetd_destroy_context(ctx);
+ return RTEMS_UNSATISFIED;
+ }
+
+ (void)rtems_task_start(
+ ctx->task_id,
+ telnetd_server_task,
+ (rtems_task_argument) ctx
+ );
+
+ syslog(
+ LOG_DAEMON | LOG_INFO,
+ "telnetd: started successfully on port %" PRIu16, ctx->config.port
+ );
+ return RTEMS_SUCCESSFUL;
+}