Commit graph

51 commits

Author SHA1 Message Date
Andreas Kling
69400c2ca1 LibCore: Replace manual forward declarations with <LibCore/Forward.h> 2020-02-15 00:13:44 +01:00
Andreas Kling
8f7333f080 LibCore: Add a forward declaration header
This patch adds <LibCore/Forward.h> and uses it in various places to
shrink the header dependency graph.
2020-02-14 23:31:18 +01:00
Andreas Kling
3bbf4610d2 AK: Add a forward declaration header
You can now #include <AK/Forward.h> to get most of the AK types as
forward declarations.

Header dependency explosion is one of the main contributors to compile
times at the moment, so this is a step towards smaller include graphs.
2020-02-14 23:31:18 +01:00
Andreas Kling
d17e23bd27 LibCore: Remove leading C from filenames 2020-02-06 15:04:03 +01:00
Andreas Kling
2d39da5405 LibCore: Put all classes in the Core namespace and remove the leading C
I've been wanting to do this for a long time. It's time we start being
consistent about how this stuff works.

The new convention is:

- "LibFoo" is a userspace library that provides the "Foo" namespace.

That's it :^) This was pretty tedious to convert and I didn't even
start on LibGUI yet. But it's coming up next.
2020-02-02 15:15:30 +01:00
Andreas Kling
d1721c761e LookupServer: Don't cache already-expired DNS answers 2020-01-26 16:25:12 +01:00
Andreas Kling
5e47508672 LookupServer: Cache DNS answers for TTL seconds
We now keep DNS answers around in a cache for TTL seconds after getting
them the first time. The cache is capped at 256 responses for now.

Suggested by @zecke in #10.
2020-01-26 15:44:51 +01:00
Andreas Kling
90a5907b44 LookupServer: Rename "custom_hosts" => "etc_hosts"
This makes it more obvious that these mappings come from /etc/hosts.
2020-01-26 15:44:51 +01:00
Andreas Kling
c26560ec26 LookupServer: Rename setting "DNS/IPAddress" => "DNS/Nameserver" 2020-01-26 15:44:51 +01:00
Andreas Kling
e335d730d6 LookupServer: Use CUdpSocket instead of the POSIX API
LibCore's UDP socket is a bit more comfortable to work with. :^)
2020-01-26 14:47:03 +01:00
Andreas Kling
537a1d31c5 LookupServer: Add missing copyright headers 2020-01-26 13:53:36 +01:00
Andreas Kling
a9ec2225a5 LookupServer: Retry with 0x20 randomization turned off on EREFUSED
Apparently some authoritative servers don't handle 0x20 randomization
well and may send EREFUSED. Retry with randomization turned off then.

Reference: https://github.com/dns-violations/dns-violations/blob/master/2017/DVE-2017-0006.md

More work towards #10.
2020-01-26 13:49:46 +01:00
Andreas Kling
00be9b33b1 LookupServer: Verify that DNS response questions match the request
To protect against DNS spoof attacks, we now check that the questions
in incoming responses match the questions in the request we sent out.

Suggested by @zecke in #10.
2020-01-26 13:07:43 +01:00
Andreas Kling
b4d55b16b6 LookupServer: Randomize the 0x20 bit in DNS request ASCII characters
This adds a bit of extra entropy to DNS requests, making it harder to
spoof a valid response.

Suggested by @zecke in #10.
2020-01-26 13:07:21 +01:00
Andreas Kling
02be23cf81 LookupServer: Randomize DNS request ID's
Suggested by @zecke in #10.
2020-01-26 12:38:49 +01:00
Andreas Kling
871b6b4e1a LookupServer: Minor overhaul
- Break out request building into a DNSRequest class.
- Break out response parsing into a DNSResponse class.

A DNSRequest contains one or more DNSQuestion objects.
A DNSResponse contains all the DNSQuestions asked, and a DNSAnswer
object for each answer.
2020-01-26 12:37:08 +01:00
Brian Gianforcaro
521c6dbbee LookupServer: Lock unveil() after initialization.
Once LookupServer is initialized it should never need
access to any any paths for the lifetime of the process.

Lock the veil post initialization.
2020-01-22 11:25:09 +01:00
Andreas Kling
94ca55cefd Meta: Add license header to source files
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.

For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.

Going forward, all new source files should include a license header.
2020-01-18 09:45:54 +01:00
Andreas Kling
26a31c7efb Kernel: Add "accept" pledge promise for accepting incoming connections
This patch adds a new "accept" promise that allows you to call accept()
on an already listening socket. This lets programs set up a socket for
for listening and then dropping "inet" and/or "unix" so that only
incoming (and existing) connections are allowed from that point on.
No new outgoing connections or listening server sockets can be created.

In addition to accept() it also allows getsockopt() with SOL_SOCKET
and SO_PEERCRED, which is used to find the PID/UID/GID of the socket
peer. This is used by our IPC library when creating shared buffers that
should only be accessible to a specific peer process.

This allows us to drop "unix" in WindowServer and LookupServer. :^)

It also makes the debugging/introspection RPC sockets in CEventLoop
based programs work again.
2020-01-17 11:19:06 +01:00
Brian Gianforcaro
10c1f27b7a LookupServer: Use pledge() 2020-01-13 11:05:52 +01:00
joshua stein
c127d16326 Build: support library and generator dependencies
Instead of directly manipulating LDFLAGS, set LIB_DEPS in each
subdirectory Makefile listing the libraries needed for
building/linking such as "LIB_DEPS = Core GUI Draw IPC Core".

This adds each library as an -L and -l argument in LDFLAGS, but
also adds the library.a file as a link dependency on the current
$(PROGRAM).  This causes the given library to be (re)built before
linking the current $(PROGRAM), but will also re-link any binaries
depending on that library when it is modified, when running make
from the root directory.

Also turn generator tools like IPCCompiler into dependencies on the
files they generate, so they are built on-demand when a particular
directory needs them.

This all allows the root Makefile to just list directories and not
care about the order, as all of the dependency tracking will figure
it out.
2019-12-25 10:11:09 +01:00
joshua stein
ac25438d54 Build: clean up build system, use one shared Makefile
Allow everything to be built from the top level directory with just
'make', cleaned with 'make clean', and installed with 'make
install'.  Also support these in any particular subdirectory.

Specifying 'make VERBOSE=1' will print each ld/g++/etc. command as
it runs.

Kernel and early host tools (IPCCompiler, etc.) are built as
object.host.o so that they don't conflict with other things built
with the cross-compiler.
2019-12-20 20:20:54 +01:00
Sergey Bugaev
ab98969403 LookupServer: Port to socket takeover 2019-11-26 19:58:25 +01:00
Sergey Bugaev
821ed8367b LookupServer: Port to LibCore 2019-11-26 19:58:25 +01:00
Andreas Kling
7e97e1c5d9 LookupServer: Remove debug spam about /etc/hosts 2019-10-16 12:10:33 +02:00
Andreas Kling
3a4da5aa05 LookupServer: Cache successful DNS lookup responses for 1 minute
This reduces DNS traffic spam during web browsing. We can definitely do
a lot better here, this is just a very low-hanging fruit.
2019-10-16 12:10:16 +02:00
Andreas Kling
8f45a259fc ByteBuffer: Remove pointer() in favor of data()
We had two ways to get the data inside a ByteBuffer. That was silly.
2019-09-30 08:57:01 +02:00
Andreas Kling
8d550c174e LibCore: Convert CFile to ObjectPtr 2019-09-21 20:50:06 +02:00
Andreas Kling
73fdbba59c AK: Rename <AK/AKString.h> to <AK/String.h>
This was a workaround to be able to build on case-insensitive file
systems where it might get confused about <string.h> vs <String.h>.

Let's just not support building that way, so String.h can have an
objectively nicer name. :^)
2019-09-06 15:36:54 +02:00
Andreas Kling
1d0b464618 AK: Make HashMap::get(Key) return an Optional<Value>.
This allows HashMap::get() to be used for value types that cannot be default
constructed (e.g NonnullOwnPtr.)
2019-07-24 10:25:43 +02:00
Robin Burchell
f2c0e55070 Userspace: Deal with select() returning EINTR on a signal interruption
Add a trivial CSafeSyscall template that calls a callback until it stops
returning EINTR, and use it everywhere we use select() now.

Thanks to Andreas for the suggestion of using a template parameter for
the syscall function to invoke.
2019-07-21 14:27:14 +02:00
Andreas Kling
27f699ef0c AK: Rename the common integer typedefs to make it obvious what they are.
These types can be picked up by including <AK/Types.h>:

* u8, u16, u32, u64 (unsigned)
* i8, i16, i32, i64 (signed)
2019-07-03 21:20:13 +02:00
VAN BOSSUYT Nicolas
802d4dcb6b Meta: Removed all gitignore in the source tree only keeping the root one 2019-06-30 10:41:26 +02:00
Andreas Kling
8cb0c765ca LookupServer: Use a CFile for loading /etc/hosts.
This fixes an issue with the lines having extra bytes at the end due after
converting from ByteBuffer to String.
2019-06-20 21:48:33 +02:00
Christopher Dumas
0491d34d0c LookupServer: use /etc/hosts even for reverse lookups 2019-06-07 08:35:41 +02:00
Christopher Dumas
70a37f9a26 LookupServer: Load hostnames 2019-06-07 08:35:41 +02:00
Christopher Dumas
4f62176c3e LookupServer: Clang-Format 2019-06-07 08:35:41 +02:00
Andreas Kling
01f1333856 LookupServer+LibC: Add support for reverse DNS lookups via gethostbyaddr().
LookupServer can now take two types of requests:

* L: Lookup
* R: Reverse lookup

The /bin/host program now does a reverse lookup if the input string is a
valid IPv4 address. :^)
2019-06-06 05:35:03 +02:00
Robin Burchell
b55b6cd7fc AK: Add implicit String -> StringView conversion
And tidy up existing view() users.
2019-06-02 12:55:51 +02:00
Robin Burchell
0dc9af5f7e Add clang-format file
Also run it across the whole tree to get everything using the One True Style.
We don't yet run this in an automated fashion as it's a little slow, but
there is a snippet to do so in makeall.sh.
2019-05-28 17:31:20 +02:00
Andreas Kling
cbd858544d LibC: Move struct timeval to sys/time.h. #POSIX 2019-05-28 13:48:06 +02:00
Christopher Dumas
c23882dde1 can now tile background and made sure the IRC choose server popup still works 2019-05-27 21:40:53 +02:00
Christopher Dumas
d4a16d6031 Network stack is now configurable, and resolution is also configurable, but loading cursors causes a page-fault? 2019-05-27 21:40:53 +02:00
Andreas Kling
852d648912 Fix "make clean" not deleting app binaries. 2019-05-13 14:56:18 +02:00
Andreas Kling
57da00b731 Include Makefile.common in all other Makefiles. 2019-04-21 04:09:39 +02:00
Andreas Kling
ab94a6be00 AK: Add String::copy(BufferType) helper.
This will create a String from any BufferType that has data() and size().
2019-04-20 14:13:40 +02:00
Andreas Kling
301a269ca0 Get rid of SERENITY macro since the compiler already defines __serenity__
This makes it a bit easier to use AK templates out-of-tree.
2019-04-20 12:58:49 +02:00
Andreas Kling
ff93d3f362 LookupServer: Only interpret A records as 32-bit IPv4 addresses.
This fixes a bug where CNAME records would be interpreted as if they were
IP addresses, causing much confusion.
2019-04-02 20:39:33 +02:00
Andreas Kling
17e02e7450 Move NetworkOrdered.h to AK/ since it's used in both kernel and userspace. 2019-04-02 20:04:54 +02:00
Andreas Kling
23bb276fcd LibC: Run constructors on process startup.
Cooperate with the compiler to generate and execute the _init_array list
of constructor functions on userspace program statup. This took two days
to get working, my goodness. :^)
2019-03-27 12:48:21 +01:00