From b44da223499ebc2b2088a1cef2d44b7ed1777529 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Dec 21 2023 12:06:01 +0000
Subject: Fix tracefile setting, C type errors (#2255510)


Related to:

  <https://fedoraproject.org/wiki/Changes/PortingToModernC>
  <https://fedoraproject.org/wiki/Toolchain/PortingToModernC>

---

diff --git a/telnet-c99.patch b/telnet-c99.patch
new file mode 100644
index 0000000..07a2039
--- /dev/null
+++ b/telnet-c99.patch
@@ -0,0 +1,38 @@
+The changes to telnet/commands.c fix fix a crash in the tracefile
+command on 64-bit architectures due to pointer truncation.
+
+The telnetd.c change is just to avoid a future compiler error.
+
+diff -ur netkit-telnet-0.17.orig/telnet/commands.c netkit-telnet-0.17/telnet/commands.c
+--- netkit-telnet-0.17.orig/telnet/commands.c	2023-12-21 12:28:51.146313891 +0100
++++ netkit-telnet-0.17/telnet/commands.c	2023-12-21 12:58:47.177886556 +0100
+@@ -843,7 +843,7 @@
+ struct termios new_tc;
+ #endif
+ 
+-typedef	void (*set_handler_t) P((int));
++typedef	void (*set_handler_t) P((char *));
+ struct setlist {
+     const char *name;				/* name */
+     const char *help;				/* help information */
+@@ -857,7 +857,7 @@
+ #endif
+     { "escape",	"character to escape back to telnet command mode", 0, &escape },
+     { "rlogin", "rlogin escape character", 0, &rlogin },
+-    { "tracefile", "file to write trace information to", (set_handler_t)SetNetTrace, (cc_t *)NetTraceFile},
++    { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
+     { " ", "", 0, NULL },
+     { " ", "The following need 'localchars' to be toggled true", 0, 0 },
+     { "flushoutput", "character to cause an Abort Output", 0, &termFlushChar },
+diff -ur netkit-telnet-0.17.orig/telnetd/telnetd.c netkit-telnet-0.17/telnetd/telnetd.c
+--- netkit-telnet-0.17.orig/telnetd/telnetd.c	2023-12-21 12:28:51.149313860 +0100
++++ netkit-telnet-0.17/telnetd/telnetd.c	2023-12-21 12:29:51.396695540 +0100
+@@ -385,7 +385,7 @@
+ 	}
+ #endif	/* defined(HAS_IPPROTO_IP) && defined(IP_TOS) */
+ 	net = s;
+-	doit(&from, fromlen);
++	doit((struct sockaddr *) &from, fromlen);
+ 	/* NOTREACHED */
+ 	return 0;
+ }  /* end of main */
diff --git a/telnet.spec b/telnet.spec
index 6a93de3..9a2005d 100644
--- a/telnet.spec
+++ b/telnet.spec
@@ -3,7 +3,7 @@
 Summary: The client program for the Telnet remote login protocol
 Name: telnet
 Version: 0.17
-Release: 90%{?dist}
+Release: 91%{?dist}
 Epoch: 1
 License: BSD-3-Clause AND BSD-4-Clause AND BSD-4-Clause-UC
 Source0: ftp://ftp.uk.linux.org/pub/linux/Networking/netkit/netkit-telnet-%{version}.tar.gz
@@ -42,6 +42,7 @@ Patch31: netkit-telnet-0.17-telnetrc.patch
 Patch32: telnet-log-address.patch
 Patch33: telnet-0.17-overflow-exploit.patch
 Patch34: telnet-0.17-pty-retry.patch
+Patch35: telnet-c99.patch
 
 BuildRequires: make
 BuildRequires: ncurses-devel systemd gcc gcc-c++
@@ -100,6 +101,7 @@ mv telnet telnet-NETKIT
 %patch32 -p1 -b .log-address
 %patch33 -p1 -b .overflow
 %patch34 -p1 -b .pty-retry
+%patch35 -p1 -b .c99
 
 %build
 %ifarch s390 s390x
@@ -162,6 +164,9 @@ install -D -p -m644 %SOURCE6 ${RPM_BUILD_ROOT}%{_unitdir}/telnet.socket
 %{_mandir}/man8/telnetd.8*
 
 %changelog
+* Thu Dec 21 2023 Florian Weimer <fweimer@redhat.com> - 1:0.17-91
+- Fix tracefile setting, C type errors (#2255510)
+
 * Sat Jul 22 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1:0.17-90
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild