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   workaround FreeBSD <fts.h> changing fts_open()'s compar signature

   FreeBSD 5.2 changed fts_open()'s compar function signature by
   adding extra const to the pointer arguments, and compilers
   may complain about the mismatch.
   Add workaround if compiling for FreeBSD and its <fts.h>.

   Add history of various security advisories to ChangeLog and NEWS.

   tnftpd 20231001 release

   Changes since tnftpd 20200704
   * Security fixes to improve error handling when switching UID/GID,
     and to prevent MLSD and MLST before authentication succeeds.
   * Fix buffer overflows when counting users, and when authenticating
     using PAM.

   todo: portability issues, libnetbsd updates

   regen

   always use $YACC even without --enable-maintainer-mode

   Provide custom rules to create ftpcmd.c from $(YACC) ftpcmd.y,
   instead of relying upon automake's default rules, so that
   we always use $(YACC) even without --enable-maintainer-mode,
   and we ship ftpcmd.y not ftpcmd.c.

   (There should be an easier way in automake to do this.)

   Display YACC and YFLAGS at end of configure.

   docs for NetBSD-20230930 import

   merge conflicts between NetBSD-20230922 and NetBSD-20230930

   Import NetBSD-ftpd 20230930

   Notable changes since import tag NetBSD-20230922
   - Fix uninitialized memory usage in count_users()
   - Fix pam_set_item() call with proper struct passed as PAM_SOCKADDR

   regen

   configure: remove obsolete macros

   Remove macros marked obsolescent in autoconf 2.69 and
   warned as obsolete in autoconf 2.71:
    AC_HEADER_STDC()
    AC_HEADER_TIME()
    AC_TYPE_SIGNAL()

   configure: improve check for inet_net_pton()

   Look for inet_net_pton() in -lresolv (for glibc).
   Move library checks after header checks, in case latter are needed for former.
   Display vars at end of configure: CC, CFLAGS, CPPFLAGS, LDFLAGS, LIBS

   update ChangeLog for yesterday's improvements

   sync .manin pages with upstream

   improve netbsd2tnftpd conversion

   replace ftpd with tnftpd in more macros

   merge conflicts between NetBSD-20200615 and NetBSD-20230922

   Import NetBSD-ftpd 20230922

   Notable changes since import tag NetBSD-20200615:
   - Treat failed chdir/chroot for guest and chroot accounts as fatal.
     Also treat failed set{e,}(u,g}id calls as fatal.
     Addresses CVE-2020-7468, via FreeBSD.
   - Improve seteuid error handling, per suggestion by Simon Josefsson.
   - Add missing check_login checks for MLST and MLSD.

   regen

   editorial fixes

   libnetbsd: add placeholder source to avoid an empty library

   configure: only replace fts_open if required FTS_ flags aren't available

   Use system fts_open() if it provides the flags we use:
        FTS_COMFOLLOW|FTS_LOGICAL|FTS_NOSTAT|FTS_PHYSICAL|FTS_SEEDOT

   todo: DONE: fgetln and glob

   configure: only replace glob if required GLOB_ flags aren't available

   Use system glob() if it provides the flags we use:
        GLOB_BRACE|GLOB_LIMIT|GLOB_NOCHECK|GLOB_TILDE

   configure: enable AC_USE_SYSTEM_EXTENSIONS()

   We use various POSIX extensions, so enable them.

   configure: use --option-name in feature display

   Use the appropriate option name in the feature display.
   Sort the options.

   adapt __progname to setprogname() / getprogname()

   Import setprogname() and getprogname() from
   othersrc/usr.bin/tnftp/libnetbsd/setprogname.c rev 1.4.

   Use getprogname() instead of __progname.

   Fixes link error on modern NetBSD which correctly complained
   about duplicate definition of __progname.

   regen with automake 1.16.1, libtool 2.4.6

   regen with automake 1.16.1, libtool 2.4.6

   configure.ac: deprecate AC_REVISION

   Allows regen as part of the release commit / tag

   sync lib/libc/gen/stringlist.c 1.13

   Functional changes since upstream 1.8:
   - 1.11: Add sl_delete. Change sl_find() to use const char * argument.
   - 1.10: Don't update the size of allocated storage until realloc successes.

   Note: not updating to upstream 1.15 because that was a refactor to
   use reallocarr() which I'm deferring for now.

   Comment out other unneeded upstream code to minimise differences.


   Update sl_find() and sl_delete() declarations in tnftpd.h
   per include/stringlist.h rev 1.6.