Commit Graph

92 Commits

Author SHA1 Message Date
Auke Kok
e737b1c271 Nodebox: Allow nodeboxes to "connect"
We introduce a new nodebox type "connected", and allow these nodes to
have optional nodeboxes that connect it to other connecting nodeboxes.

This is all done at scenedraw time in the client. The client will
inspect the surrounding nodes and if they are to be connected to,
it will draw the appropriate connecting nodeboxes to make those
connections.

In the node_box definition, we have to specify separate nodeboxes for
each valid connection. This allows us to make nodes that connect only
horizontally (the common case) by providing optional nodeboxes for +x,
-x, +z, -z directions. Or this allows us to make wires that can connect
up and down, by providing nodeboxes that connect it up and down (+y,
-y) as well.

The optional nodeboxes can be arrays. They are named "connect_top,
"connect_bottom", "connect_front", "connect_left", "connect_back" and
"connect_right". Here, "front" means the south facing side of the node
that has facedir = 0.

Additionally, a "fixed" nodebox list present will always be drawn,
so one can make a central post, for instance. This "fixed" nodebox
can be omitted, or it can be an array of nodeboxes.

Collision boxes are also updated in exactly the same fashion, which
allows you to walk over the upper extremities of the individual
node boxes, or stand really close to them. You can also walk up
node noxes that are small in height, all as expected, and unlike the
NDT_FENCELIKE nodes.

I've posted a screenshot demonstrating the flexibility at
    http://i.imgur.com/zaJq8jo.png
In the screenshot, all connecting nodes are of this new subtype.

Transparent textures render incorrectly, Which I don't think is
related to this text, as other nodeboxes also have issues with this.

A protocol bump is performed in order to be able to send older clients
a nodeblock that is usable for them. In order to avoid abuse of users
we send older clients a "full-size" node, so that it's impossible for
them to try and walk through a fence or wall that's created in this
fashion. This was tested with a pre-bump client connected against a
server running the new protocol.

These nodes connect to other nodes, and you can select which ones
those are by specifying node names (or group names) in the
connects_to string array:
      connects_to = { "group:fence", "default:wood" }
By default, nodes do not connect to anything, allowing you to create
nodes that always have to be paired in order to connect. lua_api.txt
is updated to reflect the extension to the node_box API.

Example lua code needed to generate these nodes can be found here:
    https://gist.github.com/sofar/b381c8c192c8e53e6062
2016-03-12 12:08:17 -05:00
nerzhul
147425483a GOTBLOCKS & DELETEBLOCKS: test packet size only once 2016-02-23 14:24:21 +01:00
Auke Kok
735e3b7059 Backface culling: Ignore setting in tiledef from old servers.
Outdated servers are always sending tiledefs with culling
enabled no matter what, as the value was previously entirely
ignored.

To compensate, we must (1) detect that we're running against
an old server with a new client, and (2) disable culling for
mesh, plantlike, firelike and liquid draw types no matter what
the server is telling us.

In order to achieve this, we need to bump the protocol version
since we cannot rely on the tiledef version, and test for it
being older. I've bumped the protocol version, although that
should have likely happened in the actual change that introduced
the new backface_culling PR #3578. Fortunately that's only 2
commits back at this point.

We also explicitly test for the drawtype to assure we are not
changing the culling value for other nodes, where it should
remain enabled.

This was tested against various pub servers, including 0.4.13 and
0.4.12.

Fixes #3598
2016-01-23 16:33:24 +01:00
ASL97
106d4b7d05 Cache disable_anticheat and check it for "interacted_too_far" 2016-01-09 16:24:22 -05:00
gregorycu
e7e9171f37 Fix for commit 87dcee6 It uses the wrong variable and only covers some use cases. This change covers all use cases. 2016-01-04 07:50:39 +01:00
gregorycu
87dcee6ac2 Prevent technically unsafe access with empty vector 2016-01-03 15:37:49 +01:00
Alex Ford
97908cc656 Add on_secondary_use when right clicking an item in the air 2015-12-02 02:18:44 +00:00
est31
657a16d90c Only allow players with shout to chat
Fix regression of commit

5e507c9829 "Add server side ncurses terminal"

which allowed all players, even those without a shout priv, to chat.

Fixes #3362.
2015-11-13 02:35:02 +01:00
est31
5e507c9829 Add server side ncurses terminal
This adds a chat console the server owner can use for administration
or to talk with players.
It runs in its own thread, which makes the user interface immune to
the server's lag, behaving just like a client, except timeout.
As it uses the same console code as the f10 console, things like nick
completion or a scroll buffer basically come for free.
The terminal itself is written in a general way so that adding a
client version later on is just about implementing an interface.

Fatal errors are printed after the console exists and the ncurses
terminal buffer gets cleaned up with endwin(), so that the error still
remains visible.

The server owner can chose their username their entered text will
have in chat and where players can send PMs to.
Once the username is secured with a password to prevent anybody to
take over the server, the owner can execute admin tasks over the
console.

This change includes a contribution by @kahrl who has improved ncurses
library detection.
2015-11-06 08:51:14 +01:00
ShadowNinja
6f4d6cb574 Always use errorstream for DEBUG_EXCEPTION_HANDLER 2015-10-14 02:33:30 -04:00
ShadowNinja
96cc5b34fe Use warningstream for log messages with WARNING
Remove DTIME macro and its uses, too
2015-10-14 01:36:48 -04:00
Kahrl
e0b57c1140 Fix how address is logged when a wrong password is supplied
- SRP: print the address only once, not twice
- Legacy: previously the address was not printed at all
- Make both messages structurally the same, to facilitate log analyzers
2015-10-12 21:47:56 +02:00
kwolekr
7b01b94c6b Remove redundant code in player interact handler 2015-10-04 04:06:26 -04:00
est31
283bf97a1c Serialisation: documentation fixes, clarifying renames and whitespace fixes
1. Do two renames:
	* SER_FMT_CLIENT_VER_LOWEST -> SER_FMT_VER_LOWEST_WRITE
	* SER_FMT_VER_LOWEST -> SER_FMT_VER_LOWEST_READ
Now the two define values are consistently named with the _WRITE defines
SER_FMT_VER_{HIGHEST,LOWEST}_WRITE, and to better point out what the two
serialisation versions actually are for.

2. wrap some lines in doc/worldformat.txt, and point out that the node
timers are serialized at a later point, as this can cause confusion about
what now happens (if one doesn't strictly read the if block's conditions).

3. some whitespace fixes in NodeTimerList::serialize, and one new comment.
2015-09-14 07:02:15 +02:00
est31
64a5eec1bd networkprotocol.h: remove "u16 command" from doc
Its obvious that "u16 command" is inside every packet, therefore this
commit removes all mentions of the command, if non-array like notation
is used. We already didn't add "u16 command" to new packets or removed
it at packet changes, so now we remove it from existing packets.
2015-09-10 10:26:00 +02:00
est31
0903190ba2 Hide minimap if it has been disabled by server 2015-09-01 19:00:33 +02:00
David Jones
34b7a147dc Change i++ to ++i 2015-08-25 18:33:52 -04:00
ShadowNinja
e4bff8be94 Clean up threading
* Rename everything.
    * Strip J prefix.
    * Change UpperCamelCase functions to lowerCamelCase.
  * Remove global (!) semaphore count mutex on OSX.
  * Remove semaphore count getter (unused, unsafe, depended on internal
    API functions on Windows, and used a hack on OSX).
  * Add `Atomic<type>`.
  * Make `Thread` handle thread names.
  * Add support for C++11 multi-threading.
  * Combine pthread and win32 sources.
  * Remove `ThreadStarted` (unused, unneeded).
  * Move some includes from the headers to the sources.
  * Move all of `Event` into its header (allows inlining with no new includes).
  * Make `Event` use `Semaphore` (except on Windows).
  * Move some porting functions into `Thread`.
  * Integrate logging with `Thread`.
  * Add threading test.
2015-08-23 22:04:06 -04:00
nerzhul
c4b5561b3f Remove unused function from connection.{cpp,h} 2015-08-15 08:48:20 +02:00
kwolekr
1c408c4f1d Make NetworkPacket respect serialized string size limits 2015-08-10 02:16:55 -04:00
kwolekr
8560ece02e Fix BufferedPacket race condition (fixes #2983)
This was caused by the use the non-threadsafe SharedBuffer in a
threaded context.
2015-08-06 02:25:35 -04:00
kwolekr
bd0b469d3d Fix critical vulnerabilities and bugs with NetworkPacket 2015-08-06 00:10:57 -04:00
kwolekr
3183d5a403 connection: Make assertions non-fatal for received data 2015-08-05 21:01:13 -04:00
Břetislav Štec
79e2647556 src/network/connection.h: Fix race condition 2015-08-01 20:44:17 +02:00
est31
f336d3ffb6 Fix srp.cpp:815 leak
Thanks @Zeno-
2015-07-27 08:15:39 +02:00
est31
2eb329cc63 Bump protocol to 26
This was needed due to the TileDef serialisation changes. Originally it has been planned
to also add utf-8 based chat to 26, but chat changes aren't final yet, so they are done
in one change, after the release, and not two small ones, causing us having to be compliant
to three versions of the packet.
2015-07-24 20:32:26 +02:00
est31
3b50b2766a Optional reconnect functionality
Enable the server to request the client to reconnect.

This can be done with the now extended minetest.request_shutdown([reason], [reconnect]) setting.
2015-07-23 07:38:13 +02:00
est31
a57d83b46a Ask auth handler to create auth when a default password is set
-> Fix server crash with protocol >=25 if a default password is set.
-> Remove some useless and possibly confusion causing code for the TOCLIENT_FIRST_SRP packet handler
2015-07-21 18:12:28 +02:00
RealBadAngel
655fc6010f Fix relief mapping issues 2015-07-16 15:36:48 +02:00
Loic Blot
8ac0cf500f connection.cpp: remove unused constructor 2015-07-14 18:33:20 +02:00
kwolekr
5006ce8260 Remove raw message output on AOM deserialization failure
Improve TOCLIENT_ACTIVE_OBJECT_MESSAGES robustness for handling invalid data
2015-07-13 23:29:29 -04:00
kwolekr
1a1774a105 Fix damage flash when damage disabled 2015-07-10 15:58:57 -04:00
est31
b0784ba871 Use UTF-8 instead of narrow
Use wide_to_utf8 and utf8_to_wide instead of wide_to_narrow and narrow_to_wide at almost all places.
Only exceptions: test functions for narrow conversion, and chat, which is done in a separate commit.
2015-07-08 10:12:44 +02:00
est31
d92d376148 Client: better m_proto_ver initialisation
Previously, m_proto_ver was set to the serialisation version
inside the legacy init packet.

Now, if the server doesn't send a protocol version (protocols < 25),
we set m_proto_ver to some value < 25 and > 0.
2015-07-07 17:03:26 +02:00
Loic Blot
c6766b275f Typo fix on previous @est31 commit 2015-06-23 23:17:47 +02:00
est31
3a89e25fe0 Small TOCLIENT_HELLO logging fix
Fix grammar error and missing number conversion for version.
Also add deployed protocol to log line.
2015-06-23 21:14:48 +02:00
Craig Davison
bc55ef337c Use actionstream instead of errorstream when failing to emerge player 2015-06-23 19:25:06 +02:00
est31
dd91b3d6fb Generic CAO cleanups and renames for clarification
* Use enum for GENERIC_CMD_*
* Rename m_attachements to attachement_parent_ids (public member and clearer name)
* Rename GENERIC_CMD_SET_ATTACHMENT to GENERIC_CMD_ATTACH_TO
* USHRT_MAX + 1 buffer sizes to prevent overflows as @kahrl suggested
* Remove unneccessary m_id from GenericCAO (shadowing protected superclass member for no reason) as @kahrl suggested
2015-06-20 03:37:30 +02:00
est31
e13d2bafc6 Deny empty username early in the protocol
Thanks to @UltimateNate for pointing this out :)
2015-05-22 20:24:39 +02:00
kwolekr
da34a2b33e Replace instances of std::map<std::string, std::string> with StringMap
Also, clean up surrounding code style
Replace by-value parameter passing with const refs when possible
Fix post-increment of iterators
2015-05-19 16:10:49 -04:00
est31
497299afd6 Lower log level for unexpected behaviour
Its a possible mistake to log in to a server with twice the same name.
Before, it triggered a server wide error message, now it logs to actionstream.
2015-05-19 00:55:58 +02:00
est31
c297a75a7d Fix build since last commit
Also rename method to better match what it does.
2015-05-16 22:14:15 +02:00
est31
8dbf683313 Finalize init packets and enable protocol v25
This enables srp.
2015-05-16 21:17:28 +02:00
est31
82e35edff5 Make early protocol auth mechanism generic, and add SRP
Adds everything needed for SRP (and everything works too),
but still deactivated, as protocol v25 init packets aren't final yet.
Can be activated by changing the LATEST_PROTOCOL_VERSION header to 25
inside networkprotocol.h.
2015-05-11 18:40:27 +02:00
Jay Arndt
2923eafaca Stop NetworkPacket methods from producing bloated packets 2015-05-05 01:47:41 +02:00
est31
ccc09abc2d Protocol 25: wstring -> string for custom access denial reasons
Also fix std::logic_error when server::DenyAccess() is used with only two arguments.
2015-04-22 14:10:39 +02:00
est31
f0a1379e5a Refactor around translatePassword
Change types for passed password from wstring to string, which removes converting
back and forth in most cases. Move the narrow_to_wide conversion, where its neccessary,
closer to irrlicht. Remove trailing spaces in guiPasswordChange.cpp. Make parameters for
translatePassword passed as const reference.
2015-04-17 06:10:30 +02:00
est31
f81759792e Make comments consistent with TOSERVER_INIT -> TOSERVER_INIT_LEGACY rename 2015-04-07 00:15:15 +02:00
Loic Blot
8804c47e59 TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD can be unreliable, catch PacketError exception.
Also set the packet size at creation not when pushing rawString, no functional change
2015-04-05 11:39:38 +02:00
Loic Blot
4235f671c1 Fix uninitialized variabled in ConnectionEvent 2015-04-05 11:13:30 +02:00