tcp_wrappers: recognize IPv6 addresses/prefixes

Intentionally or not, but the libwrap was written in such manner that
if your /etc/hosts.allow doesn't have any domain names, neither smart
keywords l

tcp_wrappers: recognize IPv6 addresses/prefixes

Intentionally or not, but the libwrap was written in such manner that
if your /etc/hosts.allow doesn't have any domain names, neither smart
keywords like LOCAL or KNOWN, then it will not try to resolve the
client address during the hosts check. This was achieved with the
NOT_INADDR() check that matched IPv4 addresses/prefixes. Extend this
to also skip resolve if client list token looks like IPv6.

Reviewed by: philip, emaste
PR: 269456
Differential revision: https://reviews.freebsd.org/D40070

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Merge ^/head r311546 through r311683.

After r311459, some ports can break, because a few of the newly added
prototypes in <tcpd.h> use FILE. Pull in a minimal forward declaration
of FILE from <stdio.h> to minimize impact. Sorry for the

After r311459, some ports can break, because a few of the newly added
prototypes in <tcpd.h> use FILE. Pull in a minimal forward declaration
of FILE from <stdio.h> to minimize impact. Sorry for the breakage.

Reported by: Shawn Webb <shawn.webb@hardenedbsd.org>
X-MFC-With: r311459

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Merge ^/head r311460 through r311545.

Also remove unnecessary extern keywords from tcpd.h.

Noticed by: kib
X-MFC-With: r311459

Merge ^/head r311314 through r311459.

Put proper prototypes in tcpd.h

Clang 4.0.0 complains about tcpd.h's not-really-prototypes, e.g.:

/usr/include/tcpd.h:75:24: error: this function declaration is not a prototype [-Werror,-Wstric

Put proper prototypes in tcpd.h

Clang 4.0.0 complains about tcpd.h's not-really-prototypes, e.g.:

/usr/include/tcpd.h:75:24: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
extern int hosts_access(); /* access control */
^

To fix this, turn these declarations into real prototypes. While here,
garbage collect the incompatible rfc931() function from scaffold.c, as
it is never used.

Reviewed by: emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D9052

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Merge from head@274682

Sync to HEAD@r274095.

Reintegrate head@r273095

Sponsored by: The FreeBSD Foundation

IFC @r273066

tcpd.h: add prototype for hosts_ctl

According the hosts_access(3) man page the hosts_ctl() prototype
should be in tcpd.h. For now, follow other declarations and don't
add the arguments in the protot

tcpd.h: add prototype for hosts_ctl

According the hosts_access(3) man page the hosts_ctl() prototype
should be in tcpd.h. For now, follow other declarations and don't
add the arguments in the prototype.

Reference:
https://www.illumos.org/issues/4385

PR: 32808
MFC after: 2 weeks

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tcpd: complete function prototypes.

This clears up at least a build issues on mysql-server
ports. While here also replace some spaces with tabs
in our headers.

PR: 42336
MFC after: 2 weeks

Missing tcp_wrapper IPv6 support seemed to be a bug, so commit it.

Now when tcp_wrapper is enabled by inetd -wW,
several accesses which should be permitted are refused only for IPv6,
if hostna

Missing tcp_wrapper IPv6 support seemed to be a bug, so commit it.

Now when tcp_wrapper is enabled by inetd -wW,
several accesses which should be permitted are refused only for IPv6,
if hostname is used to decide the host to be allowed.
IPv6 users will be just upset.

About security related concern.
-All extensions are wrapped by #ifdef INET6, so people can completely
disable the extension by recompile libwrap without INET6 option.
-Access via IPv6 is not enabled by default.
People need to enable IPv6 access by changing /etc/inetd.conf at first,
by adding tcp6 and/or tcp46 entries.
-The base of patches are from KAME package and are actually daily used
for more than a year in several Japanese IPv6 environments.
-Patches are reviewed by markm.

Approved by: jkh

Submitted by: Hajimu UMEMOTO <ume@mahoroba.org>
Reviewed by: markm
Obtained from: KAME project

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Clean import of TCP-wrappers by Wietse Venema.
Rest of build to follow.

This commit was generated by cvs2svn to compensate for changes in r44743,
which included commits to RCS files with non-trunk default branches.

Missing tcp_wrapper IPv6 support seemed to be a bug, so commit it.

Now when tcp_wrapper is enabled by inetd -wW,
several accesses which should be permitted are refused only for IPv6,
if hostna

Missing tcp_wrapper IPv6 support seemed to be a bug, so commit it.

Now when tcp_wrapper is enabled by inetd -wW,
several accesses which should be permitted are refused only for IPv6,
if hostname is used to decide the host to be allowed.
IPv6 users will be just upset.

About security related concern.
-All extensions are wrapped by #ifdef INET6, so people can completely
disable the extension by recompile libwrap without INET6 option.
-Access via IPv6 is not enabled by default.
People need to enable IPv6 access by changing /etc/inetd.conf at first,
by adding tcp6 and/or tcp46 entries.
-The base of patches are from KAME package and are actually daily used
for more than a year in several Japanese IPv6 environments.
-Patches are reviewed by markm.

Approved by: jkh

Submitted by: Hajimu UMEMOTO <ume@mahoroba.org>
Reviewed by: markm
Obtained from: KAME project

show more ...

Clean import of TCP-wrappers by Wietse Venema.
Rest of build to follow.

This commit was generated by cvs2svn to compensate for changes in r44743,
which included commits to RCS files with non-trunk default branches.