For a start, they now have different names on Windows and Unix,
reflecting their different roles: on Windows they apply escaping to
any string that's going to be used as a registry key (be it a session
name, or a host name for host key storage), whereas on Unix they're
for constructing saved-session file names in particular (and also
handle the special case of filling in "Default Settings" for NULL).
Also, they now produce output by writing to a strbuf, which simplifies
a lot of the call sites. In particular, the strbuf output idiom is
passed on to enum_settings_next, which is especially nice because its
only actual caller was doing an ad-hoc realloc loop that I can now get
rid of completely.
Thirdly, on Windows they're centralised into winmisc.c instead of
living in winstore.c, because that way Pageant can use the unescape
function too. (It was spotting the duplication there that made me
think of doing this in the first place, but once I'd started, I had to
keep unravelling the thread...)
My normal habit these days, in new code, is to treat int and bool as
_almost_ completely separate types. I'm still willing to use C's
implicit test for zero on an integer (e.g. 'if (!blob.len)' is fine,
no need to spell it out as blob.len != 0), but generally, if a
variable is going to be conceptually a boolean, I like to declare it
bool and assign to it using 'true' or 'false' rather than 0 or 1.
PuTTY is an exception, because it predates the C99 bool, and I've
stuck to its existing coding style even when adding new code to it.
But it's been annoying me more and more, so now that I've decided C99
bool is an acceptable thing to require from our toolchain in the first
place, here's a quite thorough trawl through the source doing
'boolification'. Many variables and function parameters are now typed
as bool rather than int; many assignments of 0 or 1 to those variables
are now spelled 'true' or 'false'.
I managed this thorough conversion with the help of a custom clang
plugin that I wrote to trawl the AST and apply heuristics to point out
where things might want changing. So I've even managed to do a decent
job on parts of the code I haven't looked at in years!
To make the plugin's work easier, I pushed platform front ends
generally in the direction of using standard 'bool' in preference to
platform-specific boolean types like Windows BOOL or GTK's gboolean;
I've left the platform booleans in places they _have_ to be for the
platform APIs to work right, but variables only used by my own code
have been converted wherever I found them.
In a few places there are int values that look very like booleans in
_most_ of the places they're used, but have a rarely-used third value,
or a distinction between different nonzero values that most users
don't care about. In these cases, I've _removed_ uses of 'true' and
'false' for the return values, to emphasise that there's something
more subtle going on than a simple boolean answer:
- the 'multisel' field in dialog.h's list box structure, for which
the GTK front end in particular recognises a difference between 1
and 2 but nearly everything else treats as boolean
- the 'urgent' parameter to plug_receive, where 1 vs 2 tells you
something about the specific location of the urgent pointer, but
most clients only care about 0 vs 'something nonzero'
- the return value of wc_match, where -1 indicates a syntax error in
the wildcard.
- the return values from SSH-1 RSA-key loading functions, which use
-1 for 'wrong passphrase' and 0 for all other failures (so any
caller which already knows it's not loading an _encrypted private_
key can treat them as boolean)
- term->esc_query, and the 'query' parameter in toggle_mode in
terminal.c, which _usually_ hold 0 for ESC[123h or 1 for ESC[?123h,
but can also hold -1 for some other intervening character that we
don't support.
In a few places there's an integer that I haven't turned into a bool
even though it really _can_ only take values 0 or 1 (and, as above,
tried to make the call sites consistent in not calling those values
true and false), on the grounds that I thought it would make it more
confusing to imply that the 0 value was in some sense 'negative' or
bad and the 1 positive or good:
- the return value of plug_accepting uses the POSIXish convention of
0=success and nonzero=error; I think if I made it bool then I'd
also want to reverse its sense, and that's a job for a separate
piece of work.
- the 'screen' parameter to lineptr() in terminal.c, where 0 and 1
represent the default and alternate screens. There's no obvious
reason why one of those should be considered 'true' or 'positive'
or 'success' - they're just indices - so I've left it as int.
ssh_scp_recv had particularly confusing semantics for its previous int
return value: its call sites used '<= 0' to check for error, but it
never actually returned a negative number, just 0 or 1. Now the
function and its call sites agree that it's a bool.
In a couple of places I've renamed variables called 'ret', because I
don't like that name any more - it's unclear whether it means the
return value (in preparation) for the _containing_ function or the
return value received from a subroutine call, and occasionally I've
accidentally used the same variable for both and introduced a bug. So
where one of those got in my way, I've renamed it to 'toret' or 'retd'
(the latter short for 'returned') in line with my usual modern
practice, but I haven't done a thorough job of finding all of them.
Finally, one amusing side effect of doing this is that I've had to
separate quite a few chained assignments. It used to be perfectly fine
to write 'a = b = c = TRUE' when a,b,c were int and TRUE was just a
the 'true' defined by stdbool.h, that idiom provokes a warning from
gcc: 'suggest parentheses around assignment used as truth value'!
This commit includes <stdbool.h> from defs.h and deletes my
traditional definitions of TRUE and FALSE, but other than that, it's a
100% mechanical search-and-replace transforming all uses of TRUE and
FALSE into the C99-standardised lowercase spellings.
No actual types are changed in this commit; that will come next. This
is just getting the noise out of the way, so that subsequent commits
can have a higher proportion of signal.
LogContext is now the owner of the logevent() function that back ends
and so forth are constantly calling. Previously, logevent was owned by
the Frontend, which would store the message into its list for the GUI
Event Log dialog (or print it to standard error, or whatever) and then
pass it _back_ to LogContext to write to the currently open log file.
Now it's the other way round: LogContext gets the message from the
back end first, writes it to its log file if it feels so inclined, and
communicates it back to the front end.
This means that lots of parts of the back end system no longer need to
have a pointer to a full-on Frontend; the only thing they needed it
for was logging, so now they just have a LogContext (which many of
them had to have anyway, e.g. for logging SSH packets or session
traffic).
LogContext itself also doesn't get a full Frontend pointer any more:
it now talks back to the front end via a little vtable of its own
called LogPolicy, which contains the method that passes Event Log
entries through, the old askappend() function that decides whether to
truncate a pre-existing log file, and an emergency function for
printing an especially prominent message if the log file can't be
created. One minor nice effect of this is that console and GUI apps
can implement that last function subtly differently, so that Unix
console apps can write it with a plain \n instead of the \r\n
(harmless but inelegant) that the old centralised implementation
generated.
One other consequence of this is that the LogContext has to be
provided to backend_init() so that it's available to backends from the
instant of creation, rather than being provided via a separate API
call a couple of function calls later, because backends have typically
started doing things that need logging (like making network
connections) before the call to backend_provide_logctx. Fortunately,
there's no case in the whole code base where we don't already have
logctx by the time we make a backend (so I don't actually remember why
I ever delayed providing one). So that shortens the backend API by one
function, which is always nice.
While I'm tidying up, I've also moved the printf-style logeventf() and
the handy logevent_and_free() into logging.c, instead of having copies
of them scattered around other places. This has also let me remove
some stub functions from a couple of outlying applications like
Pageant. Finally, I've removed the pointless "_tag" at the end of
LogContext's official struct name.
This should make it easier to do formatted-string based logging
outside ssh.c, because I can wrap up a local macro in any source file
I like that expands to logevent_and_free(wherever my Frontend is,
dupprintf(macro argument)).
It caused yet another stub function to be needed in testbn, but there
we go.
(Also, while I'm here, removed a redundant declaration of logevent
itself from ssh.h. The one in putty.h is all we need.)
I just spotted it while I was looking through this module anyway. It
was using %.100s to prevent an sprintf buffer overflow, which hasn't
been necessary since I switched everything over to dupprintf, and also
it was printing the integer value of GetLastError() without using my
convenient translation wrapper win_strerror.
I heard recently that at least one third-party client of Pageant
exists, and that it's used to generate signatures to use with TLS
client certificates. Apparently the signature scheme is compatible,
but TLS tends to need signatures over more data than will fit in
AGENT_MAX_MSGLEN.
Before the BinarySink refactor in commit b6cbad89f, this was OK
because the Windows Pageant IPC didn't check the size of the _input_
message against AGENT_MAX_MSGLEN, only the output one. But then we
started checking both, so that third-party TLS client started failing.
Now we use VirtualQuery to find out the actual size of the file
mapping we've been passed, and our only requirement is that the input
and output messages should both fit in _that_. So TLS should work
again, and also, other clients should be able to retrieve longer lists
of public keys if they pass a larger file mapping.
One side effect of this change is that Pageant's reply message is now
written directly into the shared-memory region. Previously, it was
written into a separate buffer and then memcpy()ed over after
pageant_handle_msg returned, but now the buffer is variable-size, it
seems to me to make more sense to avoid that extra not-entirely
controlled malloc. So I've done one very small reordering of
statements in the cross-platform pageant_handle_msg(), which fixes the
only case I could find where that function started writing its output
before it had finished using the contents of the input buffer.
Previously, the code to recover and memory-map the file-mapping object
Pageant uses for its IPC, and the code to convey its contents to and
from the cross-platform agent code, were widely separated, with the
former living in the WM_COPYDATA handler in the window procedure, and
the latter in answer_msg.
Now all of that code lives in answer_filemapping_message; WndProc only
handles the _window message_ contents - i.e. ensures the WM_COPYDATA
message has the right dwData id and that its lpData contains an ASCIZ
string - and answer_filemapping_message goes all the way from that
file-mapping object name to calling pageant_handle_msg.
While I'm here, I've also tidied up the code so that it uses the 'goto
cleanup' idiom rather than nesting everything inconveniently deeply,
and arranged that if anything goes wrong then we at least _construct_
an error message (although as yet we don't use that for anything
unless we're compiled with DEBUG_IPC enabled).
Rather than squelching the warning, I'm actually paying attention to
the deprecation, in that I'm allowing for the possibility that the
function might stop existing or stop returning success.
After Pavel Kryukov pointed out that I have to put _something_ in the
'ssh_key' structure, I thought of an actually useful thing to put
there: why not make it store a pointer to the ssh_keyalg structure?
Then ssh_key becomes a classoid - or perhaps 'traitoid' is a closer
analogy - in the same style as Socket and Plug. And just like Socket
and Plug, I've also arranged a system of wrapper macros that avoid the
need to mention the 'object' whose method you're invoking twice at
each call site.
The new vtable pointer directly replaces an existing field of struct
ec_key (which was usable by several different ssh_keyalgs, so it
already had to store a pointer to the currently active one), and also
replaces the 'alg' field of the ssh2_userkey structure that wraps up a
cryptographic key with its comment field.
I've also taken the opportunity to clean things up a bit in general:
most of the methods now have new and clearer names (e.g. you'd never
know that 'newkey' made a public-only key while 'createkey' made a
public+private key pair unless you went and looked it up, but now
they're called 'new_pub' and 'new_priv' you might be in with a
chance), and I've completely removed the openssh_private_npieces field
after realising that it was duplicating information that is actually
_more_ conveniently obtained by calling the new_priv_openssh method
(formerly openssh_createkey) and throwing away the result.
It's an SSH-1 specific function, so it should have a name reflecting
that, and it didn't. Also it had one of those outdated APIs involving
passing it a client-allocated buffer and size. Now it has a sensible
name, and internally it constructs the output string using a strbuf
and returns it dynamically allocated.
This gets rid of yet another huge pile of beating around the bush with
length-counting. Also, this time, the BinarySink in question is a
little more interesting than just being a strbuf every time: on
Windows, where the shared-memory Pageant IPC system imposes a hard
limit on the size of message we can return, I've written a custom
BinarySink implementation that collects up to that much data and then
gives up and sets an overflow flag rather than continue to allocate
memory.
So the main Pageant code no longer has to worry about checking
AGENT_MAX_MSGLEN all the time - and better still, the Unix version of
Pageant is no longer _limited_ by AGENT_MAX_MSGLEN in its outgoing
messages, i.e. it could store a really extra large number of keys if
it needed to. That limitation is now a local feature of Windows
Pageant rather than intrinsic to the whole code base.
(AGENT_MAX_MSGLEN is still used to check incoming agent messages for
sanity, however. Mostly that's because I feel I ought to check them
against _some_ limit, and this one seems sensible enough. Incoming
agent messages are more bounded anyway - they generally don't hold
more than _one_ private key.)
This causes PuTTY processes spawned from its system-tray menu to run
with the -restrict-acl option (or rather, the synonymous &R prefix
used by my auto-constructed command lines for easier parsing).
The previous behaviour of Pageant was never to pass -restrict-acl to
PuTTY, even when started with -restrict-acl itself; this is not
actually a silly thing to want to do, because Pageant might well have
more need of -restrict-acl than PuTTY (it stores longer-term and more
powerful secrets) and conversely PuTTY might have more need to _not_
restrict its ACL than Pageant (in that among the things enabled by an
unrestricted ACL are various kinds of accessibility software, which is
more useful on the more user-facing PuTTY than on Pageant).
But for those who want to lock everything down with every security
option possible (even though -restrict-acl is only an ad-hoc
precaution and cannot deliver any hard guarantees), this new option
should fill in the UI gap.
While I'm looking at these two dialog boxes, I notice there's another
prominent difference between PuTTY's one and these: I also never got
round to adding the button to go to PuTTY's main website. Now added.
As documented in bug 'win-process-acl-finesse', we've had enough
assorted complaints about it breaking various non-malicious pieces of
Windows process interaction (ranging from git->plink integration to
screen readers for the vision-impaired) that I think it's more
sensible to set the process back to its default level of protection.
This precaution was never a fully effective protection anyway, due to
the race condition at process startup; the only properly effective
defence would have been to prevent malware running under the same user
ID as PuTTY in the first place, so in that sense, nothing has changed.
But people who want the arguable defence-in-depth advantage of the ACL
restriction can now turn it on with the '-restrict-acl' command-line
option, and it's up to them whether they can live with the assorted
inconveniences that come with it.
In the course of this change, I've centralised a bit more of the
restriction code into winsecur.c, to avoid repeating the error
handling in multiple places.
This shows the build platform (32- vs 64-bit in particular, and also
whether Unix GTK builds were compiled with or without the X11 pieces),
what compiler was used to build the binary, and any interesting build
options that might have been set on the make command line (especially,
but not limited to, the security-damaging ones like NO_SECURITY or
UNPROTECT). This will probably be useful all over the place, but in
particular it should allow the different Windows binaries to be told
apart!
Commits 21101c739 and 2eb952ca3 laid the groundwork for this, by
allowing the various About boxes to contain free text and also
ensuring they could be copied and pasted easily as part of a bug
report.
At least on systems providing SetDefaultDllDirectories, this should
stop PuTTY from being willing to load DLLs from its containing
directory - which makes no difference when it's been properly
installed (in which case the application dir contains no DLLs anyway),
but does if it's being run from somewhere uncontrolled like a browser
downloads directory.
Preliminary testing suggests that this shouldn't break any existing
deliberate use of DLLs, including GSSAPI providers.
I can't believe this codebase is around 20 years old and has had
multiple giant const-fixing patches, and yet there are _still_ things
that should have been const for years and aren't.
We also have the special-purpose -DUNPROTECT to disable just the ACL
changes, but if you want to compile without any Windows security API
support at all (e.g. experimentally building against winelib) then
it's easier not to have to specify both defines separately.
Protecting our processes from outside interference need not be limited
to just PuTTY: there's no reason why the other SSH-speaking tools
shouldn't have the same treatment (PSFTP, PSCP, Plink), and PuTTYgen
and Pageant which handle private key material.
This is an absolutely horrible piece of code, relying not only on font
metrics but also on an observed correlation between the length of a
key algorithm name and whether or not it needs a separate key size
displayed. But it'll do for the moment, and it's less effort than
writing a custom piece of Windows API code to display the list box
entries in a properly robust way :-(
A user reported in January that locking down our process ACL causes
get_user_sid's call to OpenProcessToken to fail with a permissions
error. This _shouldn't_ be important, because we'll already have found
and cached the user SID before getting that far - but unfortunately
the call to get_user_sid in winnpc.c was bypassing the cache and
trying the whole process again.
This fix changes the memory ownership semantics of get_user_sid():
it's now an error to free the value it gives you, or else the *next*
call to get_user_sid() will return a stale pointer. Hence, also
removed those frees everywhere they appear.
Now all the uses of the licence text or the short copyright notice get
it from a new header "licence.h", which in turn is built by a Perl
script licence.pl invoked by mkfiles.pl, using LICENCE itself as the
source.
Hence, I can completely remove a whole section from the list of
licence locations in CHECKLST.txt :-)
(cherry picked from commit 9ddd071ec2)
Conflicts:
unix/gtkdlg.c
windows/winpgnt.c
(cherry-picker's notes: one conflict was just changed context, the
other was deleting a copy of the licence that wasn't quite the same
between branches)
This makes the About and Licence boxes copy-and-pasteable, similarly
to what I've just done on Unix.
(But unlike on the Unix side, here I haven't touched the host key
prompt dialog, because that's a standard Windows MessageBox and not
easy to mess around with. Plus, in any case, you can already hit ^C to
copy the whole text out of a MessageBox. Same goes for the PGP
fingerprints dialog.)
As a side effect, several copies of the copyright notice and licence
text have moved from .rc files into C source. I've updated
CHECKLST.txt, but they won't stay there for long.
(cherry picked from commit 2eb952ca31)
Conflicts:
windows/pageant.rc
windows/puttygen.rc
windows/win_res.rc2
(cherry-picker's notes: the conflict was just because several copies
of the licence text were deleted, and they weren't quite the same
between branches)
Now all the uses of the licence text or the short copyright notice get
it from a new header "licence.h", which in turn is built by a Perl
script licence.pl invoked by mkfiles.pl, using LICENCE itself as the
source.
Hence, I can completely remove a whole section from the list of
licence locations in CHECKLST.txt :-)
This makes the About and Licence boxes copy-and-pasteable, similarly
to what I've just done on Unix.
(But unlike on the Unix side, here I haven't touched the host key
prompt dialog, because that's a standard Windows MessageBox and not
easy to mess around with. Plus, in any case, you can already hit ^C to
copy the whole text out of a MessageBox. Same goes for the PGP
fingerprints dialog.)
As a side effect, several copies of the copyright notice and licence
text have moved from .rc files into C source. I've updated
CHECKLST.txt, but they won't stay there for long.
We are passing pointers as third argument to AppendMenu. Do not
truncate them to UINT, use UINT_PTR instead which has the required
size on 64bit Windows.
Having found a lot of unfixed constness issues in recent development,
I thought perhaps it was time to get proactive, so I compiled the
whole codebase with -Wwrite-strings. That turned up a huge load of
const problems, which I've fixed in this commit: the Unix build now
goes cleanly through with -Wwrite-strings, and the Windows build is as
close as I could get it (there are some lingering issues due to
occasional Windows API functions like AcquireCredentialsHandle not
having the right constness).
Notable fallout beyond the purely mechanical changing of types:
- the stuff saved by cmdline_save_param() is now explicitly
dupstr()ed, and freed in cmdline_run_saved.
- I couldn't make both string arguments to cmdline_process_param()
const, because it intentionally writes to one of them in the case
where it's the argument to -pw (in the vain hope of being at least
slightly friendly to 'ps'), so elsewhere I had to temporarily
dupstr() something for the sake of passing it to that function
- I had to invent a silly parallel version of const_cmp() so I could
pass const string literals in to lookup functions.
- stripslashes() in pscp.c and psftp.c has the annoying strchr nature
There were ad-hoc functions for fingerprinting a bare key blob in both
cmdgen.c and pageant.c, not quite doing the same thing. Also, every
SSH-2 public key algorithm in the code base included a dedicated
fingerprint() method, which is completely pointless since SSH-2 key
fingerprints are computed in an algorithm-independent way (just hash
the standard-format public key blob), so each of those methods was
just duplicating the work of the public_blob() method with a less
general output mechanism.
Now sshpubk.c centrally provides an ssh2_fingerprint_blob() function
that does all the real work, plus an ssh2_fingerprint() function that
wraps it and deals with calling public_blob() to get something to
fingerprint. And the fingerprint() method has been completely removed
from ssh_signkey and all its implementations, and good riddance.
I've now centralised into pageant.c all the logic about trying to load
keys of any type, with no passphrase or with the passphrases used in
previous key-loading actions or with a new user-supplied passphrase,
whether we're the main Pageant process ourself or are talking to
another one as a client. The only part of that code remaining in
winpgnt.c is the user interaction via dialog boxes, which of course is
the part that will need to be done differently on other platforms.
Now it actually logs all its requests and responses, the fingerprints
of keys mentioned in all messages, and so on.
I've also added the -v option, which causes Pageant in any mode to
direct that logging information to standard error. In --debug mode,
however, the logging output goes to standard output instead (because
when debugging, that information changes from a side effect to the
thing you actually wanted in the first place :-).
An internal tweak: the logging functions now take a va_list rather
than an actual variadic argument list, so that I can pass it through
several functions.
I'm aiming for windows/winpgnt.c to only contain the parts of Windows
Pageant that are actually to do with handling the Windows API, and for
all the actual agent logic to be cross-platform.
This commit is a start: I've moved every function and internal
variable that was easy to move. But it doesn't get all the way there -
there's still a lot of logic in add_keyfile() and get_keylist*() that
would be good to move out to cross-platform code, but it's harder
because that code is currently quite intertwined with details of
Windows OS interfacing such as printing message boxes and passphrase
prompts and calling back out to agent_query if the Pageant doing that
job isn't the primary one.
Pageant's list box needs its tab stops reorganised a little for new
tendencies in string length, and also has to cope with there only
being one prefix space in the output of the new string fingerprint
function. PuTTYgen needs to squash more radio buttons on to one line.
This provides support for ECDSA public keys, for both hosts and users,
and also ECDH key exchange. Supported curves are currently just the
three NIST curves required by RFC 5656.
The basic strategy is described at the top of the new source file
sshshare.c. In very brief: an 'upstream' PuTTY opens a Unix-domain
socket or Windows named pipe, and listens for connections from other
PuTTYs wanting to run sessions on the same server. The protocol spoken
down that socket/pipe is essentially the bare ssh-connection protocol,
using a trivial binary packet protocol with no encryption, and the
upstream has to do some fiddly transformations that I've been
referring to as 'channel-number NAT' to avoid resource clashes between
the sessions it's managing.
This is quite different from OpenSSH's approach of using the Unix-
domain socket as a means of passing file descriptors around; the main
reason for that is that fd-passing is Unix-specific but this system
has to work on Windows too. However, there are additional advantages,
such as making it easy for each downstream PuTTY to run its own
independent set of port and X11 forwardings (though the method for
making the latter work is quite painful).
Sharing is off by default, but configuration is intended to be very
easy in the normal case - just tick one box in the SSH config panel
and everything else happens automatically.
[originally from svn r10083]
There's now a winsecur.[ch], which centralises helper functions using
the Windows security stuff in advapi.h (currently just get_user_sid),
and also centralises the run-time loading of those functions and
checking they're all there.
[originally from svn r10082]
The most interesting one is printer_add_enum, which I've modified to
take a char ** rather than a char * so that it can both realloc its
input buffer _and_ return NULL to indicate error.
[originally from svn r9959]
of the GET_32BIT macros and then used as length fields. Missing bounds
checks against zero have been added, and also I've introduced a helper
function toint() which casts from unsigned to int in such a way as to
avoid C undefined behaviour, since I'm not sure I trust compilers any
more to do the obviously sensible thing.
[originally from svn r9918]
zero but does it in such a way that over-clever compilers hopefully
won't helpfully optimise the call away if you do it just before
freeing something or letting it go out of scope. Use this for
(hopefully) every memset whose job is to destroy sensitive data that
might otherwise be left lying around in the process's memory.
[originally from svn r9586]
Pageant's IPC mechanism. It's incomplete (he sent a much more
comprehensive set of fixes that I haven't reviewed), but should be
adequate to mitigate a particular issue for Bazaar users.
[originally from svn r9355]
GUIs of Pageant and PuTTYgen. With that and the prompts_t redesign,
there should no longer be any limit on passphrase length other than
the patience of the user.
[originally from svn r9320]
policies before and after r9178, and hence able to talk to both
0.60-like and 0.61-like clients.
I had failed to consider that many pieces of code derived from PuTTY
would have imported the Pageant client code, so we shouldn't randomly
stop supporting things just because _we_ aren't using them any more.
[originally from svn r9264]
[r9178 == af78191a9c]
code (as introduced in r9043), so that it uses the user SID rather
than the default SID.
This does change the access-control model, in that a Pageant running
with administrator privilege will now serve keys to an unprivileged
PuTTY running as the same user who started Pageant. Owen and I think
this isn't a problem (in particular, it will still not serve keys to a
_different_ user).
More importantly, making the Pageant client and server code work the
same way means that PuTTY and Pageant can still talk to each other
when UAC is turned off, which we've had several reports of r9043
having broken.
[originally from svn r9178]
[r9043 == 05f22632eb]
called load_system32_dll() which constructs a full pathname for the
DLL using GetSystemDirectory.
The only DLL load not covered by this change is the one for
gssapi32.dll, because that one's not in the system32 directory.
[originally from svn r8993]
and various calls to WinHelp() have been centralised into a new file
winhelp.c, which in turn has been modified to detect a .CHM file as
well as .HLP and select between them as appropriate. It explicitly
tries to load HHCTRL.OCX and use GetProcAddress, meaning that it
_should_ still work correctly on pre-HTML-Help platforms, falling
gracefully back to WinHelp, but although I tested this by
temporarily renaming my own HHCTRL.OCX I haven't yet been able to
test it on a real HTML-Help-free platform.
Also in this checkin: a new .but file and docs makefile changes to
make it convenient to build the sources for a .CHM. As yet, owing to
limitations of Halibut's CHM support, I'm not able to write a .CHM
directly, more's the pity.
[originally from svn r7000]
our app-private window messages, which is considerably higher than the
WM_XUSER we arbitrarily chose. (This isn't known to be causing any actual
problems. The fix seems not to have obviously broken anything.)
[originally from svn r6183]
[this svn revision also touched putty-wishlist]
* All the PuTTY tools for Windows and Unix now contain the fingerprints of
the Master Keys. The method for accessing them is crude but universal:
a new "-pgpfp" command-line option. (Except Unix PuTTYgen, which takes
"--pgpfp" just to be awkward.)
* Move the key policy discussion from putty-website/keys.html to
putty/doc/pgpkeys.but, and autogenerate the former from the latter.
Also tweak the text somewhat and include the fingerprints of the
Master Keys themselves.
(I've merged the existing autogeneration scripts into a single new
one; I've left the old scripts and keys.html around until such time
as the webmonster reviews the changes and plumbs in the new script;
he should remove the old files then.)
[originally from svn r5524]
[this svn revision also touched putty-website]
discussed. Use Barrett and Silverman's convention of "SSH-1" for SSH protocol
version 1 and "SSH-2" for protocol 2 ("SSH1"/"SSH2" refer to ssh.com
implementations in this scheme). <http://www.snailbook.com/terms.html>
[originally from svn r5480]
I wanted to get to -- "software caused connection abort" and friends --
are going to be more involved (probably requiring some cross-platform
notion of help contexts), and these ones hardly seem worth the effort.
Still, I've done it now.
Side-effect: Pageant now uses the same `hinst' and `hwnd' globals as
everything else. Tested basic functionality.
[originally from svn r5417]
still only used for the host key popups. Side-effects:
- requested_help is a winstuff.h global
- Pageant now defines winstuff.h globals
(Also, my previous fix to my improved host-key dialogs only got the "changed"
case, not the "unknown" case. Some days I shouldn't be let near a keyboard.)
[originally from svn r5415]
a separate CWD for the file requester, so that when the Open File box is not
open Pageant should stay where it was started.
(Also some other minor cleanups in this area of Pageant.)
[originally from svn r5413]
[this svn revision also touched putty-wishlist]
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]
