Remove telnetd

The telnetd codebase is unmaintained and has a number of quality
issues. Telnet has been largely supplanted by ssh. If needed, a port is
available (net/freebsd-telnetd), but a more maintained implementation
should be prefered.

While the telnet client suffers from the same issues, it is deemed
to be of lower risk and is required to connect to legacy devices, so
it remains.

Reviewed by:	emaste, imp
Differential Revision:	https://reviews.freebsd.org/D36620

ObsoleteFiles.inc

@@ -52,6 +52,11 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20220928: telnetd(8) removed
+OLD_FILES+=etc/pam.d/telnetd
+OLD_FILES+=usr/libexec/telnetd
+OLD_FILES+=usr/share/man/man8/telnetd.8.gz
+
 # 20220914: domain(9) updated
 OLD_FILES+=usr/share/man/man9/domain_init.9.gz
 OLD_FILES+=usr/share/man/man9/pfctlinput.9.gz

lib/libpam/pam.d/Makefile

@@ -34,10 +34,4 @@ afterinstallconfig:
 	${INSTALL_LINK} ${TAG_ARGS} ${DESTDIR}${CONFDIR}/ftpd ${DESTDIR}${CONFDIR}/ftp
 .endif
 
-.if ${MK_TELNET} != "no"
-CONFGROUPS+=	TELNET
-TELNET+=	telnetd
-TELNETPACKAGE=	telnet
-.endif
-
 .include <bsd.prog.mk>

lib/libpam/pam.d/telnetd

@@ -1,26 +0,0 @@
-#
-# $FreeBSD$
-#
-# PAM configuration for the "telnetd" service
-#
-
-# auth
-auth		sufficient	pam_opie.so		no_warn no_fake_prompts
-auth		requisite	pam_opieaccess.so	no_warn allow_local
-#auth		sufficient	pam_krb5.so		no_warn try_first_pass
-#auth		sufficient	pam_ssh.so		no_warn try_first_pass
-auth		required	pam_unix.so		no_warn try_first_pass
-
-# account
-account		required	pam_nologin.so
-#account	required	pam_krb5.so
-account		required	pam_login_access.so
-account		required	pam_unix.so
-
-# session
-#session	optional	pam_ssh.so		want_agent
-session		required	pam_lastlog.so		no_fail
-
-# password
-#password	sufficient	pam_krb5.so		no_warn try_first_pass
-password	required	pam_unix.so		no_warn try_first_pass

libexec/Makefile

@@ -27,7 +27,6 @@ SUBDIR=	${_atf} \
 	${_rtld-elf} \
 	save-entropy \
 	${_smrsh} \
-	${_telnetd} \
 	${_tests} \
 	${_tftp-proxy} \
 	ulog-helper \
@@ -104,10 +103,6 @@ SUBDIR+=	talkd
 SUBDIR+=	tcpd
 .endif
 
-.if ${MK_TELNET} != "no"
-_telnetd=	telnetd
-.endif
-
 .if ${MK_TFTP} != "no"
 SUBDIR+=	tftpd
 .endif

libexec/telnetd/Makefile

@@ -1,45 +0,0 @@
-# $FreeBSD$
-
-# Do not define -DKLUDGELINEMODE, as it does not interact well with many
-# telnet implementations.
-
-.include <src.opts.mk>
-
-PACKAGE=	telnet
-
-TELNETDIR=	${SRCTOP}/contrib/telnet
-.PATH:		${TELNETDIR}/telnetd
-
-PROG=		telnetd
-MAN=		telnetd.8
-
-SRCS=		global.c slc.c state.c sys_term.c telnetd.c \
-		termstat.c utility.c
-
-WARNS?=		2
-WFORMAT?=	0
-
-CFLAGS+=	-DLINEMODE -DUSE_TERMIO -DDIAGNOSTICS -DOLD_ENVIRON \
-		-DENV_HACK -DSTREAMSPTY
-
-.if ${MK_INET6_SUPPORT} != "no"
-CFLAGS+=	-DINET6
-.endif
-
-CFLAGS+=	-I${TELNETDIR}
-CFLAGS+=	-I${TELNETDIR}/telnet
-
-LIBADD=		telnet util tinfow
-
-.if ${MK_OPENSSL} != "no"
-SRCS+=		authenc.c
-CFLAGS+=	-DAUTHENTICATION -DENCRYPTION
-LIBADD+=	mp crypto pam
-.endif
-
-.if ${MK_KERBEROS_SUPPORT} != "no"
-CFLAGS+=	-DKRB5 -DFORWARD -Dnet_write=telnet_net_write
-LIBADD+=	krb5 roken
-.endif
-
-.include <bsd.prog.mk>

libexec/telnetd/Makefile.depend

@@ -1,25 +0,0 @@
-# $FreeBSD$
-# Autogenerated - do NOT edit!
-
-DIRDEPS = \
-	include \
-	include/arpa \
-	include/xlocale \
-	lib/${CSU_DIR} \
-	lib/libc \
-	lib/libcom_err \
-	lib/libcompiler_rt \
-	lib/libcrypt \
-	lib/libmp \
-	lib/libpam/libpam \
-	lib/libtelnet \
-	lib/libthr \
-	lib/libutil \
-	lib/ncurses/ncursesw \
-
-
-.include <dirdeps.mk>
-
-.if ${DEP_RELDIR} == ${_DEP_RELDIR}
-# local dependencies - needed for -jN in clean tree
-.endif

libexec/telnetd/Makefile.depend.options

@@ -1,6 +0,0 @@
-# $FreeBSD$
-# This file is not autogenerated - take care!
-
-DIRDEPS_OPTIONS= KERBEROS_SUPPORT OPENSSL
-
-.include <dirdeps-options.mk>

tools/build/mk/OptionalObsoleteFiles.inc

@@ -8242,11 +8242,8 @@ OLD_FILES+=usr/share/nls/uk_UA.UTF-8/tcsh.cat
 .endif
 
 .if ${MK_TELNET} == no
-OLD_FILES+=etc/pam.d/telnetd
 OLD_FILES+=usr/bin/telnet
-OLD_FILES+=usr/libexec/telnetd
 OLD_FILES+=usr/share/man/man1/telnet.1.gz
-OLD_FILES+=usr/share/man/man8/telnetd.8.gz
 .endif
 
 .if ${MK_TESTS} == yes