[PATCH rtems-libbsd] Import telnetd from RTEMS repository
Vijay Kumar Banerjee
vijay at rtems.org
Tue Mar 30 01:39:08 UTC 2021
ping :)
On Tue, Mar 23, 2021 at 2:10 PM Vijay Kumar Banerjee <vijay at rtems.org> wrote:
>
> The files have been taken from RTEMS repository with head commit at
> bd9e45d91f77657445400bc2c814f251c9e37cef
> ---
> libbsd.py | 22 +-
> rtemsbsd/include/rtems/telnetd.h | 137 +++++
> rtemsbsd/telnetd/README | 23 +
> rtemsbsd/telnetd/check_passwd.c | 106 ++++
> rtemsbsd/telnetd/des.c | 873 +++++++++++++++++++++++++++++++
> rtemsbsd/telnetd/des.h | 1 +
> rtemsbsd/telnetd/genpw.c | 79 +++
> rtemsbsd/telnetd/pty.c | 401 ++++++++++++++
> rtemsbsd/telnetd/telnetd-init.c | 18 +
> rtemsbsd/telnetd/telnetd.c | 449 ++++++++++++++++
> 10 files changed, 2100 insertions(+), 9 deletions(-)
> create mode 100644 rtemsbsd/include/rtems/telnetd.h
> create mode 100644 rtemsbsd/telnetd/README
> create mode 100644 rtemsbsd/telnetd/check_passwd.c
> create mode 100644 rtemsbsd/telnetd/des.c
> create mode 100644 rtemsbsd/telnetd/des.h
> create mode 100644 rtemsbsd/telnetd/genpw.c
> create mode 100644 rtemsbsd/telnetd/pty.c
> create mode 100644 rtemsbsd/telnetd/telnetd-init.c
> create mode 100644 rtemsbsd/telnetd/telnetd.c
>
> diff --git a/libbsd.py b/libbsd.py
> index a2056f36..f7efda43 100644
> --- a/libbsd.py
> +++ b/libbsd.py
> @@ -293,6 +293,12 @@ 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']()
> )
> @@ -5368,8 +5374,7 @@ 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,
> @@ -5397,27 +5402,26 @@ 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'],
> 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 at 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 at 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 at ctv.es (correo at 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 at 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 at 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 at 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 at 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 at 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 at 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 at ctv.es
> + * HOME: correo at 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 at 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 at 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;
> +}
> --
> 2.26.2
>
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