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Commit Graph

26 Commits

Author SHA1 Message Date
Jacob Nevins
24b6168c1d Move the two existing DECL/GET_foo_FUNCTION macro sets used for dynamic
linking on Windows into a single global one, which can cope with function
renaming. Intended to enable eventual removal of ANSI-specific DoSomethingA
references (although I've not removed any).

[originally from svn r8738]
2009-11-08 18:47:41 +00:00
Jacob Nevins
06497952de Improve buffer handling in Windows sk_getaddr() -- we were passing
uninitialised storage into WSAAddressToString()'s length function (and
presumably getting away with it by luck).
Also improve error handling (exposed by my Wine installation, which returns
an error from WSAAddressToString() for connections to localhost for some
reason).

[originally from svn r8737]
2009-11-08 18:25:29 +00:00
Jacob Nevins
53e2b1f865 Another warning fix and cosmetic tweakage.
[originally from svn r8665]
2009-09-27 16:07:10 +00:00
Jacob Nevins
477d12edc4 From Corey Stup: when we're declaring stuff for WSAAddressToStringA, we should
use the explicitly-narrow type LPSTR, not the switchable type LPTSTR. (Since
we currently build without UNICODE this makes no practical difference to us
now.)

[originally from svn r8627]
2009-08-21 22:29:58 +00:00
Jacob Nevins
eadb18418d Corey Stup points out that any attempt to display the message "Unable to load
any WinSock library" will lead to a segfault.

[originally from svn r8625]
2009-08-21 20:05:24 +00:00
Jacob Nevins
d699530e4c Since r8305, Unix PuTTY has always "upgraded" an X11 display like "localhost:0"
to a Unix-domain socket. This typically works fine when PuTTY is run on the
same machine as the X server, but it's broken multi-hop X forwarding through
OpenSSH; when OpenSSH creates a proxy X server "localhost:10", it only listens
on TCP, not on a Unix-domain socket.

Instead, when deciding on the details of the display, we actively probe to see
if there's a Unix-domain socket we can use instead, and only use it if it's
there, falling back to the specified IP "localhost" if not.

Independently, when looking for local auth details in Xauthority for a
"localhost" TCP display, we prefer a matching Unix-domain entry, but will fall
back to an IP "localhost" entry (which would be unusual, but we don't trust a
Windows X server not to do it) -- this is a generalisation of the special case
added in r2538 (but removed in r8305, as the automatic upgrade masked the need
for it).
(This is now done in platform-independent code, so a side-effect is that
get_hostname() is now part of the networking abstraction on all platforms.)

[originally from svn r8462]
[r2538 == fda9983243]
[r8305 == ca6fc3a4da]
2009-02-24 01:01:23 +00:00
Jacob Nevins
bd5cec280a Add some hard-coded textual literal-IP representations of localhost to
sk_hostname_is_local(), to catch the case where we're doing something like X11
forwarding over SSH through a proxy, and we've thus disabled local lookup of
hostnames.
(I think this is what's behind the report in
<e9a86996-5dc2-4428-9b0c-c65693ca6351@m32g2000hsf.googlegroups.com>
in comp.security.ssh, although I'd like to know more of the circumstances.)

[originally from svn r8385]
2009-01-05 02:45:38 +00:00
Simon Tatham
59691d28a3 Implement sk_addr_dup().
[originally from svn r8294]
2008-11-08 16:58:55 +00:00
Simon Tatham
6e2501be77 Move out of the SockAddr structure the mutable fields "ai" and
"curraddr", and turn "family" into a macro-derived property of the
other fields. The idea is that this renders SockAddrs immutable once
created, which should open up the possibility of duplicating and
reusing one without having to redo the actual DNS lookup.

I _hope_ I haven't broken anything. The new code architecture
contains several rather dubious-looking operations (namely the
arbitrary choice of the first returned address in functions like
sk_getaddr and sk_address_is_local - what if, for instance, a DNS
lookup returned a local and a non-local address?), but I think they
were functionally just as dubious beforehand and all this change has
done is to make them more obviously so to a reader.

[originally from svn r8293]
2008-11-08 16:45:45 +00:00
Simon Tatham
14d825d42f OS X Leopard, it turns out, has a new and exciting strategy for
addressing X displays. Update PuTTY's display-name-to-Unix-socket-
path translation code to cope with it, thus causing X forwarding to
start working again on Leopard.

[originally from svn r8020]
2008-05-28 19:23:57 +00:00
Simon Tatham
712b4689c8 sktree is indexed on the numeric value of the socket structure's
underlying WinSock SOCKET. Therefore, if we plan to modify the
SOCKET in a socket, we must remove it from the tree before doing so,
and put it back again afterwards. Otherwise it'll violate the tree's
sorting order, and sooner or later someone will try to find it and
get back NULL.

[originally from svn r7795]
2007-11-26 21:09:54 +00:00
Simon Tatham
6c3f4b3baa The remaining issue in `win-askappend-multi' appears to have been
caused by the MessageBox() internal message loop eating WinSock
FD_READ notifications, which then don't reappear afterwards because
you have to explicitly prod a socket in order to get a repeat
notification on it.

Hence, here's a piece of infrastructure which seems to sort it out:
a new winnet.c function called socket_reselect_all(), whose function
is to go through all currently active sockets and re-run
WSAAsyncSelect() on them, causing repeat notifications for anything
we might have missed. I call this after every call to MessageBox(),
and that seems to solve the problem.

(The problem was actually masked in very recent revisions, probably
by the reinstatement of pending_netevent in r7071. However, I don't
believe that was a complete fix. This should be.)

[originally from svn r7077]
[r7071 == 57a763b0ec]
2007-01-08 19:38:39 +00:00
Simon Tatham
dc03c3948f Francois L'Archeveque spotted that the variable `winsock2_module'
only exists when compiling for IPv6, so we shouldn't try assigning
to it the rest of the time.

[originally from svn r7059]
2007-01-05 18:43:58 +00:00
Simon Tatham
d86e01e836 After discussion with Jeroen Massar, here's a patch (mostly his)
which we think fixes the vista-ipv6 problem.

[originally from svn r7007]
2006-12-23 09:04:27 +00:00
Simon Tatham
44a246aaa7 Always initialise the `addresses' field of a SockAddr to NULL,
because it gets unconditionally sfree()d in sk_addr_free(). This
just bit me when running under the MSVC debugger; not sure how it
hasn't bitten anyone until now!

[originally from svn r6800]
2006-08-26 08:37:42 +00:00
Jacob Nevins
b33d9e4a44 Tone down canonical-name resolution when using getaddrinfo(). Previously
we were doing a forward+reverse lookup, which seems above and beyond the
call of duty, especially given that getaddrinfo() can be persuaded to
return a canonical name (this is what unix/uxnet.c does).

Unfortunately, I'm unable to test this at all as Win98 doesn't have
getaddrinfo(); hopefully I'll be able to find a mug with a modern version
of Windows to check it's not completely broken.

I think the effects of this are mostly cosmetic -- the canonical name is
used for window titles (and some people have been annoyed at the new
behaviour), other displays, and probably also for proxy exclusions.

[originally from svn r5614]
2005-04-07 22:33:42 +00:00
Simon Tatham
91b10030c8 sk_address_is_local() was ignoring the possibility that a SockAddr
might have an IPv4 address in `ai' rather than in `addresses'.
Thanks to Martin Prikryl for pointing this out.

[originally from svn r5587]
2005-04-01 08:46:26 +00:00
Simon Tatham
82f82fdb6d After we thaw a frozen socket, we apparently need to restart the
WSAAsyncSelect or else Windows loses read events.

[originally from svn r5521]
2005-03-18 19:47:21 +00:00
Jacob Nevins
63784f3f9a Martin Prikryl points out that we weren't always initialising new "addrinfo"
members of Windows SockAddr_tag; particular in sk_nonamelookup() (proxy
resolution at far end) this was causing trouble.

Make sure they _always_ start out NULL (since the Windows getaddrinfo()
documentation doesn't make any claims about initialisation), and also
initialise 'naddresses' in sk_nonamelookup() for good measure.

[originally from svn r5297]
2005-02-14 11:43:27 +00:00
Jacob Nevins
0259612237 Petri Kero pointed out a FreeLibrary() call that should be guarded by NO_IPV6.
[originally from svn r5268]
2005-02-07 12:23:10 +00:00
Simon Tatham
f70efc5cc6 Support for falling back through the list of addresses returned from
a DNS lookup, whether they're IPv4, v6 or a mixture of both.

[originally from svn r5119]
[this svn revision also touched putty-wishlist]
2005-01-16 14:29:34 +00:00
Simon Tatham
c57e9f0672 For local and dynamic port forwardings (i.e. the ones which listen
on a local port), the `Auto' protocol option on the Tunnels panel
should always produce a port you can connect to in _either_ of IPv4
and v6, because the aim is for the user not to have to know or care
which one they're using. This was not the case on Windows, and now
is. Also, updated the docs to give more detail on issues like this.

[originally from svn r5083]
2005-01-08 14:45:26 +00:00
Simon Tatham
79629c729c Cleanups to sk_namelookup(). In particular, it now doesn't segfault
if you explicitly specify IPv6 and then try to look up a hostname
which doesn't have an IPv6 address.

[originally from svn r5082]
2005-01-08 14:02:06 +00:00
Simon Tatham
6daf6faede Integrate unfix.org's IPv6 patches up to level 10, with rather a lot
of polishing to bring them to what I think should in principle be
release quality. Unlike the unfix.org patches themselves, this
checkin enables IPv6 by default; if you want to leave it out, you
have to build with COMPAT=-DNO_IPV6.

I have tested that this compiles on Visual C 7 (so the nightlies
_should_ acquire IPv6 support without missing a beat), but since I
don't have IPv6 set up myself I haven't actually tested that it
_works_. It still seems to make correct IPv4 connections, but that's
all I've been able to verify for myself. Further testing is needed.

[originally from svn r5047]
[this svn revision also touched putty-wishlist]
2004-12-30 16:45:11 +00:00
Simon Tatham
7ecf13564a New timing infrastructure. There's a new function schedule_timer()
which pretty much any module can call to request a call-back in the
future. So terminal.c can do its own handling of blinking, visual
bells and deferred screen updates, without having to rely on
term_update() being called 50 times a second (fixes: pterm-timer);
and ssh.c and telnet.c both invoke a new module pinger.c which takes
care of sending keepalives, so they get sent uniformly in all front
ends (fixes: plink-keepalives, unix-keepalives).

[originally from svn r4906]
[this svn revision also touched putty-wishlist]
2004-11-27 13:20:21 +00:00
Simon Tatham
cb45b9cc25 Now that we have Subversion's file renaming ability, it's time at
long last to move all the Windows-specific source files down into a
`windows' subdirectory. Only platform-specific files remain at the
top level. With any luck this will act as a hint to anyone still
contemplating sending us a Windows-centric patch...

[originally from svn r4792]
2004-11-16 22:14:56 +00:00