├── .gitignore ├── .travis.yml ├── COPYING ├── Dockerfile ├── Makefile ├── README.md ├── config.toml ├── const_enums.go ├── const_settings.go ├── errors.go ├── glide.lock ├── glide.yaml ├── helpers.go ├── main.go ├── models.go ├── network.go ├── protocol_a2s.go ├── protocol_helpers.go ├── protocol_mumbles.go ├── protocol_mumbles_test.go ├── protocol_openttdm.go ├── protocol_openttdm_test.go ├── protocol_openttds.go ├── protocol_openttds_test.go ├── protocol_q3m.go ├── protocol_q3s.go ├── protocol_steam.go ├── protocol_teeworldsm.go ├── protocol_teeworldss.go ├── protocols.go ├── util.go └── util_test.go /.gitignore: -------------------------------------------------------------------------------- 1 | bin 2 | vendor 3 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | sudo: required 2 | language: go 3 | go: 4 | - 1.6 5 | services: 6 | - docker 7 | env: 8 | global: 9 | - secure: "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" # DOCKER_EMAIL 10 | - secure: "WZHILcapJEkiKSdnoGsxElNoGLSgIBy4UYS72RZ2wI5duu6BGMXWIShJLpAMtQ+jbBoJk25DxcFjO/v99pORk3QdkKxi5sAnyFqE1lMti/Iqx0jk+QpGxJh4iL43+Qz9gAgCiCyYLKi1C25mQ928bxk8LCK3TCvjMfBpmxuPqb+pgq7L/mcYsnN9QuAKEttuqGszmv1lSqt8Qtjs3TGFuhd2Yl7fS+6SZsNvS1xU6Y4WWFcxof+CMetHWHZUml3ydXqb75sr4oM4+FicGi5jBV/SxmXyW05/fBanGpX7/JByBGBfLBMUe+dhg4mKObSMv2lgUacculRFTy9Ua5gAGOSR4WIPbPi04CloSIZDM6uWIKOgxJsz56UsSypQ/xDqdqYFwZsua4h70wLxcbiAus9Rkrzz8eJ7gZgZGeWyt4IIGkjfx1/2wpw0qASGZhbum2EedW9V6PZ9q/u6GMohStF16jSGv5sw+nGjxQyBtwXee7RFk8yOtpg3jj8NkrLG8F8An3tq9qPGb60eOBP2Rag6COIRO/TG44nQngWxqtCvH3mKOPeFUZq7JU+lnjx5XtBshEg/p+pDQXbnEIJ/6V4RKb7tYjLJFhYEMDy2bG3XIp2fppetnIZTsymZQejI2Au/r+mOokjC53G6wOnEq36XnjVskM1xqeoHQKIuAgM=" # DOCKER_USER 11 | - secure: "h9BGjHFdOWEikWYAN1spjV/DT/RDkhwokpWTN00KbTaZjNcrOjvoGtbvs+Gv6Mix9x2n7VJph1TBQcz6XQ/MtNd6n5mPM4NUJCQBzI/QlxRr2KN+f/ebec49qqCCToO0JAnVn9Dny6pjwteksJ22qMaDfG3g3KHlxOE/t9T+IQhmqhZDawkv4YukMq+4dvRRIiPH5is2LHxaR8143zmEFpmLLJ+R+lgJgW6KHdaf+eG9DOaWdD4vf2XDeLJJbgBVmiBJe3qwei6brcbnM4p2YqfmcQWui+YvRw0n7HEK6CgIw/aWsQ1CXtNaj/01xR4HYfjyH4eS8EBtmNFJBrCwBdrB6EhkHlxnLkIp95+KA39hS/9Od3SGUss6702YNQ/7N10WfjFsHurd2FLYHbbG+pe/OzeDoTDPityIN94dVz8E3jd5rdLmF+ONBkx/mENw5rH5okPBAbQTBc+R4XeKeBqFur/5l3R4D5HHTvFudjNrD6Bi8V9oJrgnRR7qB61T5m7b/IfQoOqs+0tkJDeyRhSMUQBKLqjvok6DBC8V6/ecS1fVfReTRU4Q0pDfYkKQtIJguRP+ilxVrUy2KsRNU0tdpDW/9kdLpFdljWBphtS8Qjq6Jg2Z7UtKNZAvQCN+e4n4MSyz8JE+dRNBka25kWNo7DTvrcNr+jdqFgk1moA=" # DOCKER_PASS 12 | - COMMIT=${TRAVIS_COMMIT::8} 13 | install: 14 | - go get github.com/Masterminds/glide 15 | - make deps 16 | script: make build 17 | after_success: 18 | - docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS 19 | - export REPO=grokstat/grokstat 20 | - export TAG=`if [ "$TRAVIS_BRANCH" == "master" ]; then echo "latest"; else echo $TRAVIS_BRANCH ; fi` 21 | - docker build -f Dockerfile -t $REPO:$COMMIT . 22 | - docker tag $REPO:$COMMIT $REPO:$TAG 23 | - docker tag $REPO:$COMMIT $REPO:travis-$TRAVIS_BUILD_NUMBER 24 | - docker push $REPO 25 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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"Knowingly relying" means you have 508 | actual knowledge that, but for the patent license, your conveying the 509 | covered work in a country, or your recipient's use of the covered work 510 | in a country, would infringe one or more identifiable patents in that 511 | country that you have reason to believe are valid. 512 | 513 | If, pursuant to or in connection with a single transaction or 514 | arrangement, you convey, or propagate by procuring conveyance of, a 515 | covered work, and grant a patent license to some of the parties 516 | receiving the covered work authorizing them to use, propagate, modify 517 | or convey a specific copy of the covered work, then the patent license 518 | you grant is automatically extended to all recipients of the covered 519 | work and works based on it. 520 | 521 | A patent license is "discriminatory" if it does not include within 522 | the scope of its coverage, prohibits the exercise of, or is 523 | conditioned on the non-exercise of one or more of the rights that are 524 | specifically granted under this License. You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM scratch 2 | MAINTAINER Artem Vorotnikov 3 | COPY ./bin/grokstat /usr/bin/grokstat 4 | 5 | ENTRYPOINT [ "/usr/bin/grokstat" ] 6 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | deps: 2 | glide i && glide rebuild 3 | clean: 4 | rm -rf ./bin/* 5 | build: clean 6 | CGO_ENABLED=0 GOOS=linux go build -o ./bin/grokstat 7 | start: build 8 | ./bin/grokstat $(FLAGS) 9 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # GrokStat 2 | [![Build Status](https://img.shields.io/travis/vorot93/grokstat.svg)](https://travis-ci.org/vorot93/grokstat) 3 | [![Docker Pulls](https://img.shields.io/docker/pulls/vorot93/grokstat.svg)](https://hub.docker.com/r/vorot93/grokstat/) 4 | 5 | Retrieves information about game servers. Inspired by [QStat](https://github.com/multiplay/qstat), written in Go. Yet even more simple, extensible and fast. 6 | 7 | GrokStat accepts input data as JSON via stdin. The result is displayed in JSON form as well. In order to run a simple query you need to specify protocol and array of hosts to check. Please refer to the example below for more information. 8 | 9 | The server query is asynchronous, done via inbuilt UDP server. 10 | 11 | ## Protocols 12 | M stands for master server support. S stands for individual game server query support. 13 | 14 | ### Supported 15 | - **M** **S** | Quake-derived games: 16 | - Quake II 17 | - Quake III 18 | - Xonotic 19 | - OpenArena 20 | - Warsow 21 | - Unvanquished 22 | - Soldiers of Fortune 2 23 | - **M** **S** | OpenTTD 24 | - **M** **S** | Teeworlds 25 | - **M** **S** | Steam / SourceQuery 26 | - **S** | Mumble 27 | 28 | ## Get it 29 | ### Docker (simple) 30 | GrokStat project ships Docker images containing precompiled GrokStat, runnable out-of-the-box. 31 | #### Install / update 32 | docker pull vorot93/grokstat 33 | #### Run 34 | docker run -it --rm vorot93/grokstat 35 | ### Manual 36 | In addition to using docker you can compile and run manually. 37 | #### Dependencies 38 | go get -u github.com/BurntSushi/toml github.com/jteeuwen/go-bindata/... 39 | #### GrokStat itself 40 | git clone https://github.com/grokstat/grokstat.git 41 | cd grokstat && make build 42 | bin/grokstat 43 | 44 | ## Example 45 | ### Query servers 46 | docker run --rm grokstat/grokstat '{"hosts": {"openttdm": ["master.openttd.org:3978"], "q3m": ["master3.idsoftware.com"]}}' 47 | 48 | or 49 | 50 | echo '{"hosts": {"openttdm": ["master.openttd.org:3978"], "q3m": ["master3.idsoftware.com"]}}' | bin/grokstat 51 | 52 | or 53 | 54 | bin/grokstat '{"hosts": {"openttdm": ["master.openttd.org:3978"], "q3m": ["master3.idsoftware.com"]}}' 55 | 56 | Always mind the single quotes. 57 | ### Review available protocols 58 | docker run --rm grokstat/grokstat '{"show-protocols": true}' 59 | 60 | or 61 | 62 | echo '{"show-protocols": true}' | bin/grokstat 63 | 64 | ## License 65 | This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3, as published by the Free Software Foundation. 66 | 67 | This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 68 | -------------------------------------------------------------------------------- /config.toml: -------------------------------------------------------------------------------- 1 | [[Protocols]] 2 | Id = "q3m" 3 | Template = "Q3M" 4 | [Protocols.Overrides] 5 | MasterOf = "q3s" 6 | 7 | [[Protocols]] 8 | Id = "q3s" 9 | Template = "Q3S" 10 | 11 | [[Protocols]] 12 | Id = "q2m" 13 | Template = "Q3M" 14 | [Protocols.Overrides] 15 | RequestPreludeTemplate = "query" 16 | ResponsePreludeTemplate = "{{.PreludeStarter}}servers{{.x20}}" 17 | SplitterUsed = "false" 18 | MasterOf = "q2s" 19 | 20 | [[Protocols]] 21 | Id = "q2s" 22 | Template = "Q3S" 23 | [Protocols.Overrides] 24 | RequestPreludeTemplate = "{{.PreludeStarter}}status {{.Challenge}}" 25 | ResponsePreludeTemplate = "{{.PreludeStarter}}print" 26 | ServerNameRule = "hostname" 27 | NeedPassRule = "needpass" 28 | MaxClientsRule = "maxclients" 29 | DefaultRequestPort = "27910" 30 | 31 | [[Protocols]] 32 | Id = "sof2s" 33 | Template = "Q3S" 34 | [Protocols.Overrides] 35 | Name = "Soldier of Fortune 2" 36 | DefaultRequestPort = "20100" 37 | 38 | [[Protocols]] 39 | Id = "xonoticm" 40 | Template = "Q3M" 41 | [Protocols.Overrides] 42 | Name = "Xonotic Master" 43 | MasterOf = "xonotics" 44 | RequestPreludeTemplate = "{{.PreludeStarter}}getservers Xonotic {{.Version}} empty full" 45 | Version = "3" 46 | 47 | [[Protocols]] 48 | Id = "xonotics" 49 | Template = "Q3S" 50 | [Protocols.Overrides] 51 | Name = "Xonotic server" 52 | ServerNameRule = "hostname" 53 | ModNameRule = "modname" 54 | NumBotsRule = "bots" 55 | 56 | [[Protocols]] 57 | Id = "etm" 58 | Template = "Q3M" 59 | [Protocols.Overrides] 60 | Name = "Wolfenstein: Enemy Territory Master" 61 | MasterOf = "q3s" 62 | Version = "84" 63 | 64 | [[Protocols]] 65 | Id = "warsowm" 66 | Template = "Q3M" 67 | [Protocols.Overrides] 68 | Name = "Warsow Master" 69 | MasterOf = "q3s" 70 | RequestPreludeTemplate = "{{.PreludeStarter}}getservers Warsow {{.Version}} empty full" 71 | Version = "20" 72 | 73 | [[Protocols]] 74 | Id = "unvanquishedm" 75 | Template = "Q3M" 76 | [Protocols.Overrides] 77 | Name = "Unvanquished Master" 78 | MasterOf = "q3s" 79 | Version = "86" 80 | 81 | [[Protocols]] 82 | Id = "openarenam" 83 | Template = "Q3M" 84 | [Protocols.Overrides] 85 | Name = "OpenArena Master" 86 | MasterOf = "q3s" 87 | Version = "71" 88 | 89 | [[Protocols]] 90 | Id = "sof2m" 91 | Template = "Q3M" 92 | [Protocols.Overrides] 93 | Name = "Soldier of Fortune 2 Master" 94 | MasterOf = "sof2s" 95 | Version = "2004" 96 | RequestQueryParams = "SOF2FULL" 97 | DefaultRequestPort = "20110" 98 | 99 | [[Protocols]] 100 | Id = "teeworldsm" 101 | Template = "TEEWORLDSM" 102 | [Protocols.Overrides] 103 | MasterOf = "teeworldss" 104 | 105 | [[Protocols]] 106 | Id = "teeworldss" 107 | Template = "TEEWORLDSS" 108 | 109 | [[Protocols]] 110 | Id = "openttdm" 111 | Template = "OPENTTDM" 112 | [Protocols.Overrides] 113 | MasterOf = "openttds" 114 | 115 | [[Protocols]] 116 | Id = "openttds" 117 | Template = "OPENTTDS" 118 | 119 | [[Protocols]] 120 | Id = "steam" 121 | Template = "STEAM" 122 | [Protocols.Overrides] 123 | MasterOf = "a2s" 124 | 125 | [[Protocols]] 126 | Id = "a2s" 127 | Template = "A2S" 128 | 129 | [[Protocols]] 130 | Id = "mumbles" 131 | Template = "MUMBLES" 132 | -------------------------------------------------------------------------------- /const_enums.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | const ( 4 | MSG_OUTPUT = iota 5 | MSG_MAJOR 6 | MSG_MINOR 7 | MSG_DEBUG 8 | ) 9 | -------------------------------------------------------------------------------- /const_settings.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | const ( 4 | VERSION = "0.1" 5 | DEFAULT_OUTPUT_LVL = MSG_MAJOR 6 | ) 7 | -------------------------------------------------------------------------------- /errors.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "errors" 4 | 5 | var ( 6 | OK = errors.New("OK.") 7 | 8 | NoConfig = errors.New("No config file specified.") 9 | ErrorLoadingConfig = errors.New("Error loading config file.") 10 | 11 | IPv6NotSupported = errors.New("IPv6 is not supported yet.") 12 | 13 | NoProtocol = errors.New("Please specify the protocol.") 14 | NoHosts = errors.New("Please specify the hosts to query.") 15 | 16 | InvalidProtocol = errors.New("Invalid protocol specified.") 17 | InvalidMasterOf = errors.New("Invalid query part attached to master protocol.") 18 | 19 | ServerDown = errors.New("Server down.") 20 | 21 | MalformedPacket = errors.New("Malformed packet.") 22 | 23 | InvalidResponseHeader = errors.New("Invalid response header.") 24 | InvalidResponseLength = errors.New("Invalid response length.") 25 | InvalidResponseChallenge = errors.New("Invalid response challenge.") 26 | 27 | InvalidServerEntryInMasterResponse = errors.New("Invalid server entry in the master server response.") 28 | 29 | NoInfoResponse = errors.New("No info response.") 30 | NoServersResponse = errors.New("No servers response.") 31 | NoStatusResponse = errors.New("No status response.") 32 | 33 | InvalidServerHeader = errors.New("Invalid server header.") 34 | 35 | InvalidPlayerString = errors.New("Invalid player string.") 36 | InvalidPlayerStringLength = errors.New("Invalid player string length.") 37 | 38 | InvalidRuleString = errors.New("Invalid rule string.") 39 | InvalidRuleStringLength = errors.New("Invalid rule string length.") 40 | 41 | CompError = errors.New("Mismatch.") 42 | ) 43 | -------------------------------------------------------------------------------- /glide.lock: -------------------------------------------------------------------------------- 1 | hash: 87a273547be6dd4da9e898a0aa593cac2ed624b6c348a91659727b83f3dc9d8d 2 | updated: 2016-06-30T16:23:09.901101493+03:00 3 | imports: 4 | - name: github.com/BurntSushi/toml 5 | version: f0aeabca5a127c4078abb8c8d64298b147264b55 6 | - name: github.com/imdario/mergo 7 | version: 50d4dbd4eb0e84778abe37cefef140271d96fade 8 | - name: github.com/skybon/goutil 9 | version: dfe316edfe279ed3d64f506d9a43ff06ff0ad192 10 | devImports: [] 11 | -------------------------------------------------------------------------------- /glide.yaml: -------------------------------------------------------------------------------- 1 | package: grokstat 2 | import: 3 | - package: github.com/BurntSushi/toml 4 | - package: github.com/imdario/mergo 5 | - package: github.com/skybon/goutil 6 | -------------------------------------------------------------------------------- /helpers.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "net" 6 | "time" 7 | ) 8 | 9 | func GetServerResponse(conn net.Conn, requestPacket Packet, responseN int) (Packet, error) { 10 | var responsePacket Packet 11 | var err error 12 | 13 | packetId := requestPacket.Id 14 | 15 | buf_len := 16777215 16 | var buf []byte 17 | data := requestPacket.Data 18 | conn.Write(data) 19 | sendtime := time.Now() 20 | var recvtime time.Time 21 | var incr int 22 | var reads int 23 | if responseN > 0 { 24 | incr = 1 25 | reads = responseN 26 | } else { 27 | incr = 0 28 | reads = 1 29 | } 30 | for i := 0; i < reads; i += incr { 31 | var n int 32 | var connErr error 33 | var readBuf = make([]byte, buf_len) 34 | n, connErr = conn.Read(readBuf) 35 | if connErr != nil { 36 | break 37 | } else if n != 0 { 38 | if recvtime == (time.Time{}) { 39 | recvtime = time.Now() 40 | } 41 | buf = bytes.Join([][]byte{buf, bytes.TrimRight(readBuf, "\x00")}, []byte{}) 42 | } 43 | } 44 | ping := int64(recvtime.Sub(sendtime) / time.Millisecond) 45 | 46 | responsePacket = Packet{Data: bytes.TrimRight(buf, "\x00"), Id: packetId, Ping: ping} 47 | if len(responsePacket.Data) == 0 { 48 | err = ServerDown 49 | } 50 | 51 | return responsePacket, err 52 | } 53 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | /* 2 | grokstat is a tool for querying game servers for various information: server list, player count, active map etc 3 | 4 | The program takes protocol name and remote ip address as arguments, fetches information from the remote server, parses it and outputs back as JSON. As convenience the status and message are also provided. 5 | 6 | grokstat uses JSON input instead of command line flags. The JSON input is structured as follows: 7 | hosts - map of string keys and string array values - hosts to query 8 | show-protocols - boolean - if true, show protocols and exit 9 | output-lvl - int - tune the output from bare JSON to full-fledged debug 10 | custom-config-path - path of custom config file to be used 11 | */ 12 | package main 13 | 14 | import ( 15 | "bufio" 16 | "encoding/json" 17 | "fmt" 18 | "log" 19 | "net" 20 | "net/url" 21 | "os" 22 | "strings" 23 | "time" 24 | 25 | "github.com/BurntSushi/toml" 26 | "github.com/imdario/mergo" 27 | ) 28 | 29 | type ServerResponseStruct struct { 30 | Hostname string 31 | ResponseMap map[string]Packet 32 | ResponseErr error 33 | } 34 | 35 | type InputData struct { 36 | Hosts map[string][]string `json:"hosts"` 37 | ShowProtocols bool `json:"show-protocols"` 38 | OutputLvl int `json:"output-lvl"` 39 | ConfigPath string `json:"config-path"` 40 | } 41 | 42 | func MakeInputData() InputData { 43 | return InputData{Hosts: make(map[string][]string)} 44 | } 45 | 46 | type ConfigFile struct { 47 | Protocols []ProtocolConfig `toml:"Protocols"` 48 | } 49 | 50 | type JsonResponse struct { 51 | Version string `json:"version"` 52 | Status int `json:"status"` 53 | Message string `json:"message"` 54 | Flags InputData `json:"input-flags"` 55 | Output interface{} `json:"output"` 56 | } 57 | 58 | type PacketErrorPair struct { 59 | Packet Packet 60 | Error error 61 | } 62 | 63 | func MakePacketErrorPair(hosts []HostProtocolIdPair, protColl *ProtocolCollection) (packErrPairs []PacketErrorPair) { 64 | packErrPairs = []PacketErrorPair{} 65 | 66 | for _, hostpair := range hosts { 67 | var hostpackets = []Packet{} 68 | var err error 69 | 70 | hostport := strings.Split(hostpair.RemoteAddr, ":") 71 | protocolId := hostpair.ProtocolId 72 | protocol, protocolExists := protColl.Get(protocolId) 73 | if protocolExists { 74 | host := hostport[0] 75 | var port string 76 | if len(hostport) < 2 { 77 | port, _ = protocol.Information["DefaultRequestPort"] 78 | } else { 79 | port = hostport[1] 80 | } 81 | ipAddr, rErr := net.ResolveIPAddr("ip4", host) 82 | if rErr == nil { 83 | addrFinal := strings.Join([]string{ipAddr.String(), port}, ":") 84 | 85 | reqPackets := MakeSendPackets(HostProtocolIdPair{RemoteAddr: addrFinal, ProtocolId: protocolId}, protColl) 86 | 87 | for _, reqPacket := range reqPackets { 88 | hostpackets = append(hostpackets, reqPacket) 89 | } 90 | } else { 91 | err = rErr 92 | } 93 | } else { 94 | err = InvalidProtocol 95 | } 96 | 97 | for _, packetFinal := range hostpackets { 98 | packErrPairs = append(packErrPairs, PacketErrorPair{Packet: packetFinal, Error: err}) 99 | } 100 | } 101 | 102 | return packErrPairs 103 | } 104 | 105 | // FormJSONResponse creates a JSON string out of Grokstat output. 106 | var FormJSONResponse = func(output interface{}, err error, flags InputData) (string, error) { 107 | result := JsonResponse{Version: VERSION, Flags: flags} 108 | 109 | if err != nil { 110 | result.Output = make(map[string]interface{}) 111 | result.Status = 500 112 | result.Message = err.Error() 113 | } else { 114 | result.Output = output 115 | result.Status = 200 116 | result.Message = OK.Error() 117 | } 118 | 119 | jsonOut, jsonErr := json.Marshal(result) 120 | 121 | if jsonErr != nil { 122 | jsonOut = []byte(`{"status": 500, "message": "JSON marshaller error."}`) 123 | } 124 | 125 | return string(jsonOut), jsonErr 126 | } 127 | 128 | func CleanupMessageChan(messageChan chan ConsoleMsg, endChan <-chan struct{}) { 129 | close(messageChan) 130 | <-endChan 131 | } 132 | 133 | var PrintProtocols = func(messageChan chan ConsoleMsg, protColl *ProtocolCollection, flags InputData) { 134 | output := make(map[string]interface{}) 135 | output["protocols"] = protColl.Map() 136 | 137 | PrintJsonResponse(messageChan, output, nil, flags) 138 | } 139 | 140 | var PrintError = func(messageChan chan ConsoleMsg, err error, flags InputData) { 141 | PrintJsonResponse(messageChan, nil, err, flags) 142 | } 143 | 144 | var PrintJsonResponse = func(messageChan chan ConsoleMsg, output interface{}, err error, flags InputData) { 145 | jsonOut, _ := FormJSONResponse(output, err, flags) 146 | messageChan <- ConsoleMsg{Type: MSG_MAJOR, Message: jsonOut} 147 | } 148 | 149 | var DefaultConfigBinPath = "data/grokstat.toml" 150 | 151 | var ParseIPAddr = func(ipString string, defaultPort string) map[string]string { 152 | var ipStringMod string 153 | 154 | if len(strings.Split(ipString, "://")) == 1 { 155 | ipStringMod = "placeholder://" + ipString 156 | } else { 157 | ipStringMod = ipString 158 | } 159 | 160 | urlInfo, _ := url.Parse(ipStringMod) 161 | 162 | result := make(map[string]string) 163 | result["http_protocol"] = urlInfo.Scheme 164 | result["host"] = urlInfo.Host 165 | 166 | if len(strings.Split(result["host"], ":")) == 1 { 167 | result["host"] = result["host"] + ":" + defaultPort 168 | } 169 | 170 | return result 171 | } 172 | 173 | func identifyPacketProtocol(packet Packet) (string, bool) { 174 | return "STEAM", true 175 | } 176 | 177 | func Query(hosts []HostProtocolIdPair, protColl *ProtocolCollection, messageChan chan<- ConsoleMsg, debugLvl int) (serverHosts []string, output []ServerEntry, err error) { 178 | serverHosts = []string{} 179 | output = []ServerEntry{} 180 | 181 | // This is for easier server identification. 182 | var serverProtocolMapping = map[string]string{} 183 | var protocolMappingInChan = make(chan HostProtocolIdPair) 184 | 185 | go func() { 186 | for { 187 | mappingEntry := <-protocolMappingInChan 188 | serverProtocolMapping[mappingEntry.RemoteAddr] = mappingEntry.ProtocolId 189 | } 190 | }() 191 | // 192 | 193 | getProtocolOfServer := func(remoteAddr string) (string, bool) { 194 | protocolName, pOk := serverProtocolMapping[remoteAddr] 195 | return protocolName, pOk 196 | } 197 | 198 | serverEntryChan := make(chan ServerEntry, 9999) 199 | sendPacketChan := make(chan Packet, 9999) 200 | receivePacketChan := make(chan Packet, 9999) 201 | 202 | serverInitChan := make(chan struct{}) 203 | serverStopChan := make(chan struct{}) 204 | 205 | serverDataMap := make(map[string]ServerEntry) 206 | 207 | go func() { 208 | for { 209 | serverEntry := <-serverEntryChan 210 | hostname := serverEntry.Host 211 | 212 | oldEntry, exists := serverDataMap[hostname] 213 | if !exists { 214 | serverDataMap[hostname] = serverEntry 215 | } else { 216 | mergedEntry := oldEntry 217 | mergedRules := map[string]string{} 218 | 219 | for k, v := range mergedEntry.Rules { 220 | mergedRules[k] = v 221 | } 222 | 223 | mergo.Merge(&mergedEntry, serverEntry) 224 | mergo.Merge(&mergedRules, serverEntry.Rules) 225 | 226 | mergedEntry.Rules = mergedRules 227 | 228 | serverDataMap[hostname] = mergedEntry 229 | } 230 | } 231 | }() 232 | 233 | parseHandlerWrapper := func(packet Packet) (sendPackets []Packet) { 234 | sendPackets = make([]Packet, 0) 235 | var protocolName string 236 | protocolMappingName, pOk := getProtocolOfServer(packet.RemoteAddr) 237 | if pOk { 238 | protocolName = protocolMappingName 239 | } else { 240 | protocolIdentifiedName, iOk := identifyPacketProtocol(packet) 241 | if iOk { 242 | protocolName = protocolIdentifiedName 243 | } 244 | } 245 | if protocolName != "" { 246 | protocolEntry, protocolExists := protColl.Get(protocolName) 247 | if protocolExists { 248 | packet.ProtocolId = protocolName 249 | handlerFunc := protocolEntry.Base.HandlerFunc 250 | 251 | if handlerFunc != nil { 252 | sendPackets = handlerFunc(packet, protColl, messageChan, protocolMappingInChan, serverEntryChan) 253 | } 254 | } 255 | } 256 | 257 | return sendPackets 258 | 259 | } 260 | 261 | for _, packPair := range MakePacketErrorPair(hosts, protColl) { 262 | packet := packPair.Packet 263 | err := packPair.Error 264 | 265 | if err == nil { 266 | protocolMappingInChan <- HostProtocolIdPair{RemoteAddr: packet.RemoteAddr, ProtocolId: packet.ProtocolId} 267 | sendPacketChan <- packet 268 | } else { 269 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: err.Error()} 270 | } 271 | } 272 | 273 | go AsyncNetworkServer(serverInitChan, serverStopChan, messageChan, sendPacketChan, receivePacketChan, parseHandlerWrapper, 5*time.Second) 274 | <-serverInitChan 275 | <-serverStopChan 276 | 277 | for _, entry := range serverDataMap { 278 | serverHosts = append(serverHosts, entry.Host) 279 | output = append(output, entry) 280 | } 281 | 282 | return serverHosts, output, err 283 | } 284 | 285 | func conditionalPrint(message ConsoleMsg, outputLvl int, useLogging bool) { 286 | if message.Type <= outputLvl { 287 | if useLogging { 288 | log.Println(message.Message) 289 | } else { 290 | fmt.Println(message.Message) 291 | } 292 | } 293 | } 294 | 295 | func outputLoop(messageChan <-chan ConsoleMsg, messageEndChan chan<- struct{}, outputLvl int) { 296 | for { 297 | message, mOk := <-messageChan 298 | if mOk { 299 | conditionalPrint(message, outputLvl, outputLvl >= MSG_DEBUG) 300 | } else { 301 | messageEndChan <- struct{}{} 302 | return 303 | } 304 | } 305 | } 306 | 307 | func main() { 308 | var configInstance ConfigFile 309 | args := os.Args 310 | var argJsonText string 311 | var jsonText string 312 | 313 | if len(args) > 1 { 314 | argJsonText = args[1] 315 | } 316 | 317 | if argJsonText != "" { 318 | jsonText = argJsonText 319 | } else { 320 | reader := bufio.NewReader(os.Stdin) 321 | jsonText, _ = reader.ReadString('\n') 322 | } 323 | 324 | jsonFlags := MakeInputData() 325 | jsonFlags.OutputLvl = DEFAULT_OUTPUT_LVL 326 | jsonErr := json.Unmarshal([]byte(jsonText), &jsonFlags) 327 | 328 | messageChan := make(chan ConsoleMsg) 329 | messageEndChan := make(chan struct{}) 330 | 331 | outputLvl := jsonFlags.OutputLvl 332 | 333 | go outputLoop(messageChan, messageEndChan, outputLvl) 334 | 335 | if jsonErr != nil { 336 | PrintError(messageChan, jsonErr, jsonFlags) 337 | CleanupMessageChan(messageChan, messageEndChan) 338 | return 339 | } 340 | 341 | hostMap := jsonFlags.Hosts 342 | showProtocols := jsonFlags.ShowProtocols 343 | configPath := jsonFlags.ConfigPath 344 | debugLvl := outputLvl 345 | 346 | if configPath == "" { 347 | PrintError(messageChan, NoConfig, jsonFlags) 348 | CleanupMessageChan(messageChan, messageEndChan) 349 | return 350 | } 351 | 352 | _, err := toml.DecodeFile(configPath, &configInstance) 353 | if err != nil { 354 | PrintError(messageChan, ErrorLoadingConfig, jsonFlags) 355 | CleanupMessageChan(messageChan, messageEndChan) 356 | return 357 | } 358 | 359 | protColl := LoadProtocols(configInstance.Protocols) 360 | 361 | if showProtocols { 362 | PrintProtocols(messageChan, protColl, jsonFlags) 363 | CleanupMessageChan(messageChan, messageEndChan) 364 | return 365 | } 366 | 367 | hosts := []HostProtocolIdPair{} 368 | for protocolId, hostList := range hostMap { 369 | for _, host := range RemoveDuplicates(hostList) { 370 | hosts = append(hosts, HostProtocolIdPair{RemoteAddr: host, ProtocolId: protocolId}) 371 | } 372 | } 373 | 374 | if len(hosts) == 0 { 375 | PrintError(messageChan, NoHosts, jsonFlags) 376 | CleanupMessageChan(messageChan, messageEndChan) 377 | return 378 | } 379 | 380 | serverList, serverData, err := Query(hosts, protColl, messageChan, debugLvl) 381 | 382 | if err == nil { 383 | PrintJsonResponse(messageChan, map[string]interface{}{"server-list": serverList, "servers": serverData}, err, jsonFlags) 384 | } else { 385 | PrintError(messageChan, err, jsonFlags) 386 | CleanupMessageChan(messageChan, messageEndChan) 387 | return 388 | } 389 | 390 | CleanupMessageChan(messageChan, messageEndChan) 391 | } 392 | -------------------------------------------------------------------------------- /models.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | type ConsoleMsg struct { 4 | Type int 5 | Message string 6 | } 7 | 8 | type Packet struct { 9 | Id string 10 | Type PacketType 11 | RemoteAddr string 12 | ProtocolId string 13 | Data []byte 14 | Ping int64 15 | Timestamp int64 16 | } 17 | 18 | type PacketType int 19 | 20 | const ( 21 | TYPE_UNKNOWN PacketType = iota 22 | TYPE_TCP 23 | TYPE_TCP4 24 | TYPE_TCP6 25 | TYPE_UDP 26 | TYPE_UDP4 27 | TYPE_UDP6 28 | ) 29 | 30 | func (v PacketType) IsTCP() bool { 31 | if v == TYPE_TCP || v == TYPE_TCP4 || v == TYPE_TCP6 { 32 | return true 33 | } else { 34 | return false 35 | } 36 | } 37 | 38 | func (v PacketType) IsUDP() bool { 39 | if v == TYPE_UDP || v == TYPE_UDP4 || v == TYPE_UDP6 { 40 | return true 41 | } else { 42 | return false 43 | } 44 | } 45 | 46 | func (v PacketType) IsIP6() bool { 47 | if v == TYPE_TCP6 || v == TYPE_UDP6 { 48 | return true 49 | } else { 50 | return false 51 | } 52 | } 53 | 54 | type ProtocolEntryInfo map[string]string 55 | 56 | type ProtocolEntryBase struct { 57 | MakePayloadFunc func(Packet, ProtocolEntryInfo) Packet `json:"-"` 58 | RequestPackets []RequestPacket `json:"-"` 59 | HandlerFunc func(Packet, *ProtocolCollection, chan<- ConsoleMsg, chan<- HostProtocolIdPair, chan<- ServerEntry) []Packet `json:"-"` 60 | HttpProtocol string `json:"http_protocol"` 61 | ResponseType string `json:"response_type"` 62 | } 63 | 64 | type RequestPacket struct { 65 | Id string `json:"id"` 66 | ResponsePacketNum int `json:"response_packet_num"` 67 | } 68 | 69 | // Server query protocol entry defining grokstat's behavior 70 | type ProtocolEntry struct { 71 | Id string 72 | Base ProtocolEntryBase 73 | Information ProtocolEntryInfo 74 | } 75 | 76 | type HostProtocolIdPair struct { 77 | RemoteAddr string 78 | ProtocolId string 79 | } 80 | 81 | func MakeProtocolEntry(entryTemplate ProtocolEntry) ProtocolEntry { 82 | entryInformation := make(ProtocolEntryInfo, len(entryTemplate.Information)) 83 | for k, v := range entryTemplate.Information { 84 | entryInformation[k] = v 85 | } 86 | 87 | entry := ProtocolEntry{Base: entryTemplate.Base, Information: entryInformation} 88 | 89 | return entry 90 | } 91 | 92 | type PlayerEntry struct { 93 | Name string `json:"name"` 94 | Ping int64 `json:"ping"` 95 | Info map[string]string `json:"info"` 96 | } 97 | 98 | var MakePlayerEntry = func() PlayerEntry { 99 | return PlayerEntry{Info: map[string]string{}} 100 | } 101 | 102 | type ServerEntry struct { 103 | Protocol string `json:"protocol"` 104 | Status int `json:"status"` 105 | Error error `json:"-"` 106 | Message string `json:"message"` 107 | Host string `json:"host"` 108 | Name string `json:"name"` 109 | NeedPass bool `json:"need-pass"` 110 | ModName string `json:"modname"` 111 | GameType string `json:"gametype"` 112 | Terrain string `json:"terrain"` 113 | NumClients int64 `json:"numclients"` 114 | MaxClients int64 `json:"maxclients"` 115 | NumBots int64 `json:"numbots"` 116 | Secure bool `json:"secure"` 117 | Ping int64 `json:"ping"` 118 | Players []PlayerEntry `json:"players"` 119 | Rules map[string]string `json:"rules"` 120 | } 121 | 122 | var MakeServerEntry = func() ServerEntry { 123 | return ServerEntry{Players: []PlayerEntry{}, Rules: map[string]string{}} 124 | } 125 | -------------------------------------------------------------------------------- /network.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "net" 6 | "time" 7 | ) 8 | 9 | func receiveHandler(packet Packet, sendRequestChan chan<- Packet, parseHandler func(Packet) []Packet) { 10 | sendPackets := parseHandler(packet) 11 | 12 | for _, sendPacket := range sendPackets { 13 | sendRequestChan <- sendPacket 14 | } 15 | } 16 | 17 | func receiveHandlerLoop(endChan chan struct{}, receiveChan chan Packet, sendRequestChan chan<- Packet, receiveHandler func(Packet, chan<- Packet, func(Packet) []Packet), parseHandler func(Packet) []Packet, awakeChan chan<- struct{}) { 18 | for { 19 | select { 20 | case dataAvailable := <-receiveChan: 21 | awakeChan <- struct{}{} 22 | go receiveHandler(dataAvailable, sendRequestChan, parseHandler) 23 | case <-endChan: 24 | return 25 | } 26 | } 27 | } 28 | 29 | func keepAliveLoop(awakeChan chan struct{}, timeOut time.Duration, endChans ...chan struct{}) { 30 | <-awakeChan 31 | for { 32 | if timeOut > 0 { 33 | select { 34 | case <-awakeChan: 35 | case <-time.After(timeOut): 36 | for _, endChannel := range endChans { 37 | endChannel <- struct{}{} 38 | } 39 | return 40 | } 41 | } else { 42 | <-awakeChan 43 | } 44 | } 45 | } 46 | 47 | func readUDP(conn *net.UDPConn) (Packet, error) { 48 | bufsize := 2048 49 | buf := make([]byte, bufsize) 50 | 51 | n, addr, err := conn.ReadFromUDP(buf) 52 | if err != nil { 53 | return Packet{}, err 54 | } 55 | 56 | return Packet{Data: buf[:n], Timestamp: time.Now().Unix(), RemoteAddr: addr.String()}, nil 57 | } 58 | 59 | func writeUDP(conn *net.UDPConn, packet Packet) { 60 | remoteIpUdp, rErr := net.ResolveUDPAddr("udp4", packet.RemoteAddr) 61 | CheckError(rErr) 62 | conn.WriteToUDP(packet.Data, remoteIpUdp) 63 | } 64 | 65 | func udpReceiveLoop(endChan <-chan struct{}, conn *net.UDPConn, messageChan chan<- ConsoleMsg, receiveChan chan Packet, awakeChan chan struct{}) { 66 | for { 67 | select { 68 | case <-endChan: 69 | return 70 | default: 71 | packet, err := readUDP(conn) 72 | awakeChan <- struct{}{} 73 | if err == nil { 74 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: fmt.Sprintf("Read %d bytes from %s", len(packet.Data), packet.RemoteAddr)} 75 | receiveChan <- packet 76 | } 77 | } 78 | } 79 | 80 | } 81 | 82 | func udpSendLoop(endChan <-chan struct{}, conn *net.UDPConn, messageChan chan<- ConsoleMsg, sendChan chan Packet, awakeChan chan struct{}) { 83 | for { 84 | select { 85 | case dataSendPayload := <-sendChan: 86 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: fmt.Sprintf("Writing %d bytes to %s", len(dataSendPayload.Data), dataSendPayload.RemoteAddr)} 87 | awakeChan <- struct{}{} 88 | go writeUDP(conn, dataSendPayload) 89 | case <-endChan: 90 | return 91 | } 92 | } 93 | } 94 | 95 | func AsyncUDPServer(endChan <-chan struct{}, initChan, doneChan chan<- struct{}, messageChan chan<- ConsoleMsg, sendChan, receiveChan chan Packet, parseHandler func(Packet) []Packet, timeOut time.Duration, awakeChan chan struct{}) { 96 | conn, err := net.ListenUDP("udp", &net.UDPAddr{ 97 | Port: 0, 98 | IP: net.IPv4zero, 99 | }) 100 | if err != nil { 101 | panic(err) 102 | } 103 | defer conn.Close() 104 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("Starting UDP server at %s", conn.LocalAddr().String())} 105 | 106 | endReceive := make(chan struct{}, 1) 107 | endWrite := make(chan struct{}, 1) 108 | 109 | go udpReceiveLoop(endReceive, conn, messageChan, receiveChan, awakeChan) 110 | go udpSendLoop(endWrite, conn, messageChan, sendChan, awakeChan) 111 | 112 | initChan <- struct{}{} 113 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("Started UDP server at %s", conn.LocalAddr().String())} 114 | <-endChan 115 | endWrite <- struct{}{} 116 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: fmt.Sprintf("Stopped UDP send loop.")} 117 | endReceive <- struct{}{} 118 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: fmt.Sprintf("Stopped UDP capture loop.")} 119 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("UDP server stopped.")} 120 | doneChan <- struct{}{} 121 | } 122 | 123 | func AsyncTCPServer(endChan <-chan struct{}, initChan, doneChan chan<- struct{}, messageChan chan<- ConsoleMsg, sendChan, receiveChan chan Packet, parseHandler func(Packet) []Packet, timeOut time.Duration, awakeChan chan struct{}) { 124 | initChan <- struct{}{} 125 | <-endChan 126 | doneChan <- struct{}{} 127 | } 128 | 129 | func splitSendPacketsLoop(genChan <-chan Packet, udpChan, tcpChan chan<- Packet) { 130 | for { 131 | packet := <-genChan 132 | if packet.Type.IsTCP() { 133 | tcpChan <- packet 134 | } else { 135 | udpChan <- packet 136 | } 137 | } 138 | } 139 | 140 | func AsyncNetworkServer(initChan, doneChan chan<- struct{}, messageChan chan<- ConsoleMsg, sendChan, receiveChan chan Packet, parseHandler func(Packet) []Packet, timeOut time.Duration) { 141 | awakeChan := make(chan struct{}, 9999) 142 | 143 | udpKillChan := make(chan struct{}, 1) 144 | tcpKillChan := make(chan struct{}, 1) 145 | 146 | udpStartedChan := make(chan struct{}) 147 | udpStoppedChan := make(chan struct{}) 148 | tcpStartedChan := make(chan struct{}) 149 | tcpStoppedChan := make(chan struct{}) 150 | 151 | udpSendChan := make(chan Packet) 152 | tcpSendChan := make(chan Packet) 153 | 154 | endCallbackChan := make(chan struct{}) 155 | 156 | go splitSendPacketsLoop(sendChan, udpSendChan, tcpSendChan) 157 | 158 | go AsyncUDPServer(udpKillChan, udpStartedChan, udpStoppedChan, messageChan, udpSendChan, receiveChan, parseHandler, timeOut, awakeChan) 159 | go AsyncTCPServer(tcpKillChan, tcpStartedChan, tcpStoppedChan, messageChan, tcpSendChan, receiveChan, parseHandler, timeOut, awakeChan) 160 | 161 | go receiveHandlerLoop(endCallbackChan, receiveChan, sendChan, receiveHandler, parseHandler, awakeChan) 162 | 163 | <-udpStartedChan 164 | <-tcpStartedChan 165 | initChan <- struct{}{} 166 | 167 | go keepAliveLoop(awakeChan, timeOut, udpKillChan, tcpKillChan) 168 | 169 | <-udpStoppedChan 170 | <-tcpStoppedChan 171 | doneChan <- struct{}{} 172 | } 173 | -------------------------------------------------------------------------------- /protocol_a2s.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "fmt" 6 | ) 7 | 8 | func A2SMakeProtocolTemplate() ProtocolEntry { 9 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "A2S_INFO"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 10 | return SimpleReceiveHandler(A2SparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 11 | }, HttpProtocol: "udp", ResponseType: "Server list"}, Information: ProtocolEntryInfo{"Name": "Source Engine Server", "DefaultRequestPort": "27015", "RequestPreludeTemplate": "\xff\xff\xff\xffTSource Engine Query\x00", "ResponsePreludeTemplate": "\xFF\xFF\xFF\xFF"}} 12 | } 13 | 14 | func A2SparsePacket(packet Packet, protocolInfo ProtocolEntryInfo) (ServerEntry, error) { 15 | preludeTemplate, pTOk := protocolInfo["ResponsePreludeTemplate"] 16 | var body []byte 17 | var preludeOk bool 18 | if pTOk { 19 | prelude := []byte(preludeTemplate) 20 | body, preludeOk = CheckPrelude(packet.Data, prelude) 21 | } else { 22 | body = packet.Data 23 | preludeOk = true 24 | } 25 | 26 | if !preludeOk { 27 | return ServerEntry{}, InvalidResponseHeader 28 | } 29 | entryBuf := bytes.NewBuffer(body) 30 | serverHeader := entryBuf.Next(1) 31 | if !bytes.Equal(serverHeader, []byte{0x49}) { 32 | return ServerEntry{}, InvalidServerHeader 33 | } 34 | protocolVer := entryBuf.Next(1) 35 | serverNameRaw, serverNameErr := entryBuf.ReadBytes(byte(0)) 36 | if serverNameErr != nil { 37 | return ServerEntry{}, InvalidResponseLength 38 | } 39 | serverName := string(bytes.Trim(serverNameRaw, "\x00")) 40 | 41 | mapNameRaw, mapNameErr := entryBuf.ReadBytes(byte(0)) 42 | if mapNameErr != nil { 43 | return ServerEntry{}, InvalidResponseLength 44 | } 45 | mapName := string(bytes.Trim(mapNameRaw, "\x00")) 46 | 47 | folderNameRaw, folderNameErr := entryBuf.ReadBytes(byte(0)) 48 | if folderNameErr != nil { 49 | return ServerEntry{}, InvalidResponseLength 50 | } 51 | folderName := string(bytes.Trim(folderNameRaw, "\x00")) 52 | 53 | modNameRaw, modNameErr := entryBuf.ReadBytes(byte(0)) 54 | if modNameErr != nil { 55 | return ServerEntry{}, InvalidResponseLength 56 | } 57 | modName := string(bytes.Trim(modNameRaw, "\x00")) 58 | 59 | steamAppidLE := entryBuf.Next(2) 60 | 61 | numPlayers := entryBuf.Next(1) 62 | maxPlayers := entryBuf.Next(1) 63 | numBots := entryBuf.Next(1) 64 | serverTypeKW := entryBuf.Next(1) 65 | 66 | var serverType string 67 | switch string(serverTypeKW) { 68 | case "d": 69 | serverType = "dedicated" 70 | case "l": 71 | serverType = "non-dedicated" 72 | case "p": 73 | serverType = "proxy" 74 | default: 75 | return ServerEntry{}, InvalidResponseLength 76 | } 77 | 78 | serverOSKW := entryBuf.Next(1) 79 | var serverOS string 80 | switch string(serverOSKW) { 81 | case "l": 82 | serverOS = "linux" 83 | case "w": 84 | serverOS = "windows" 85 | case "m", "o": 86 | serverOS = "osx" 87 | default: 88 | return ServerEntry{}, InvalidResponseLength 89 | } 90 | 91 | needPassKW := entryBuf.Next(1) 92 | var needPass bool 93 | switch int(needPassKW[0]) { 94 | case 0: 95 | needPass = false 96 | case 1: 97 | needPass = true 98 | default: 99 | return ServerEntry{}, InvalidResponseLength 100 | } 101 | 102 | secureKW := entryBuf.Next(1) 103 | var secure bool 104 | switch int(secureKW[0]) { 105 | case 0: 106 | secure = false 107 | case 1: 108 | secure = true 109 | default: 110 | return ServerEntry{}, InvalidResponseLength 111 | } 112 | 113 | steamAppid := ByteLEToInt64(steamAppidLE) 114 | 115 | var additionalRules map[string]string 116 | if steamAppid == int64(2400) { 117 | additionalRules = make(map[string]string) 118 | additionalRules["theship-mode"] = fmt.Sprint(int(entryBuf.Next(1)[0])) 119 | additionalRules["theship-witnesses"] = fmt.Sprint(int(entryBuf.Next(1)[0])) 120 | additionalRules["theship-duration"] = fmt.Sprint(int(entryBuf.Next(1)[0])) 121 | } 122 | 123 | versionRaw, versionErr := entryBuf.ReadBytes(byte(0)) 124 | if versionErr != nil { 125 | return ServerEntry{}, InvalidResponseLength 126 | } 127 | version := string(bytes.Trim(versionRaw, "\x00")) 128 | 129 | serverEntry := MakeServerEntry() 130 | serverEntry.Name = serverName 131 | serverEntry.Terrain = mapName 132 | serverEntry.ModName = modName 133 | serverEntry.NumClients = int64(numPlayers[0]) 134 | serverEntry.MaxClients = int64(maxPlayers[0]) 135 | serverEntry.NumBots = int64(numBots[0]) 136 | serverEntry.NeedPass = needPass 137 | serverEntry.Secure = secure 138 | serverEntry.Rules["folder-name"] = string(folderName) 139 | serverEntry.Rules["protocol-version"] = fmt.Sprint(protocolVer) 140 | serverEntry.Rules["server-type"] = serverType 141 | serverEntry.Rules["server-os"] = serverOS 142 | serverEntry.Rules["version"] = version 143 | if additionalRules != nil { 144 | for k, v := range additionalRules { 145 | serverEntry.Rules[k] = v 146 | } 147 | } 148 | 149 | return serverEntry, nil 150 | } 151 | -------------------------------------------------------------------------------- /protocol_helpers.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "fmt" 6 | ) 7 | 8 | func MakeRequestPacket(packetId string, protocolInfo ProtocolEntryInfo) (requestPacket Packet) { 9 | templ, _ := protocolInfo["RequestPreludeTemplate"] 10 | requestPacket = Packet{Data: []byte(ParseTemplate(templ, protocolInfo))} 11 | return requestPacket 12 | } 13 | 14 | func MakePayload(packet Packet, protocolInfo ProtocolEntryInfo) Packet { 15 | packet.Data = MakeRequestPacket(packet.Id, protocolInfo).Data 16 | return packet 17 | } 18 | 19 | func SimpleReceiveHandler(parseFunc func(Packet, ProtocolEntryInfo) (ServerEntry, error), packet Packet, protColl *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 20 | sendPackets = []Packet{} 21 | 22 | protocolId := packet.ProtocolId 23 | protocol, protocolExists := protColl.Get(protocolId) 24 | if !protocolExists { 25 | return sendPackets 26 | } 27 | 28 | protocolInfo := protocol.Information 29 | remoteIp := packet.RemoteAddr 30 | serverEntry, sErr := parseFunc(packet, protocolInfo) 31 | 32 | if sErr != nil { 33 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("%s - %s - %s", protocolId, remoteIp, sErr.Error())} 34 | return sendPackets 35 | } 36 | 37 | serverEntry.Protocol = protocolId 38 | serverEntry.Host = remoteIp 39 | serverEntry.Status = 200 40 | 41 | serverEntryChan <- serverEntry 42 | 43 | return sendPackets 44 | } 45 | 46 | func MasterReceiveHandler(parseFunc func(Packet, ProtocolEntryInfo) ([]string, error), packet Packet, protColl *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 47 | sendPackets = []Packet{} 48 | 49 | protocolId := packet.ProtocolId 50 | protocol, protocolExists := protColl.Get(protocolId) 51 | if !protocolExists { 52 | return sendPackets 53 | } 54 | 55 | protocolInfo := protocol.Information 56 | protocolName, _ := protocolInfo["Name"] 57 | remoteIp := packet.RemoteAddr 58 | servers, err := parseFunc(packet, protocolInfo) 59 | 60 | if err != nil { 61 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("%s - %s - %s.", protocolId, remoteIp, err.Error())} 62 | return sendPackets 63 | } 64 | 65 | masterOf := protocolInfo["MasterOf"] 66 | for _, ipAddr := range servers { 67 | pair := HostProtocolIdPair{RemoteAddr: ipAddr, ProtocolId: masterOf} 68 | protocolMappingInChan <- pair 69 | sendPackets = append(sendPackets, MakeSendPackets(pair, protColl)...) 70 | } 71 | 72 | masterServerEntry := MakeServerEntry() 73 | masterServerEntry.Protocol = packet.ProtocolId 74 | masterServerEntry.Host = packet.RemoteAddr 75 | masterServerEntry.Name = fmt.Sprintf("%s Server", protocolName) 76 | masterServerEntry.Status = 200 77 | 78 | serverEntryChan <- masterServerEntry 79 | 80 | return sendPackets 81 | } 82 | 83 | func MakeSendPackets(pair HostProtocolIdPair, protocolCollection *ProtocolCollection) (sendPackets []Packet) { 84 | sendPackets = []Packet{} 85 | 86 | remoteAddr := pair.RemoteAddr 87 | protocolId := pair.ProtocolId 88 | if protocol, exists := protocolCollection.Get(protocolId); exists { 89 | requestPackets := protocol.Base.RequestPackets 90 | for _, reqPacketDesc := range requestPackets { 91 | packetId := reqPacketDesc.Id 92 | makePayloadFunc := protocol.Base.MakePayloadFunc 93 | if makePayloadFunc != nil { 94 | newReqPacket := protocol.Base.MakePayloadFunc(Packet{Id: packetId, RemoteAddr: remoteAddr, ProtocolId: protocolId}, protocol.Information) 95 | sendPackets = append(sendPackets, newReqPacket) 96 | } 97 | } 98 | } 99 | return sendPackets 100 | } 101 | 102 | func CheckPrelude(data []byte, prelude []byte) (body []byte, rOk bool) { 103 | rOk = bytes.Equal(data[:len(prelude)], prelude) 104 | body = data[len(prelude):] 105 | return body, rOk 106 | } 107 | 108 | func DefaultMasterReceiveHandler() {} 109 | 110 | func ParseHandlerPrint(packet Packet, messageChan chan<- ConsoleMsg) []Packet { 111 | messageChan <- ConsoleMsg{Type: 3, Message: string(packet.Data)} 112 | return nil 113 | } 114 | 115 | var ParseBinaryIPv4Entry = func(entryRaw []byte, portLittleEndian bool) (string, error) { 116 | if len(entryRaw) != 6 { 117 | return "", InvalidServerEntryInMasterResponse 118 | } 119 | 120 | entry := make([]int, 6) 121 | for i, v := range entryRaw { 122 | entry[i] = int(v) 123 | } 124 | var a, b, c, d, port int 125 | a = entry[0] 126 | b = entry[1] 127 | c = entry[2] 128 | d = entry[3] 129 | if portLittleEndian { 130 | port = entry[5]<<8 | entry[4] 131 | } else { 132 | port = entry[4]<<8 | entry[5] 133 | } 134 | 135 | if a == 0 { 136 | return "", InvalidServerEntryInMasterResponse 137 | } 138 | 139 | serverEntry := fmt.Sprintf("%d.%d.%d.%d:%d", a, b, c, d, port) 140 | 141 | return serverEntry, nil 142 | } 143 | -------------------------------------------------------------------------------- /protocol_mumbles.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "encoding/binary" 6 | "fmt" 7 | ) 8 | 9 | func MUMBLESMakeProtocolTemplate() ProtocolEntry { 10 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "ping"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) []Packet { 11 | return SimpleReceiveHandler(MUMBLESparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 12 | }, HttpProtocol: "udp", ResponseType: "Server ping"}, Information: ProtocolEntryInfo{"Name": "Mumble Server", "PreludeStarter": "\x00\x00\x00\x00", "PreludeFinisher": "", "Challenge": "grokstat", "RequestPreludeTemplate": "{{.PreludeStarter}}{{.Challenge}}{{.PreludeFinisher}}", "DefaultRequestPort": "64738"}} 13 | } 14 | 15 | func MUMBLESparsePacket(p Packet, info ProtocolEntryInfo) (v ServerEntry, err error) { 16 | defer func() { 17 | if r := recover(); r != nil { 18 | v = MakeServerEntry() 19 | err = MalformedPacket 20 | } 21 | }() 22 | var challenge *string 23 | var c, req = info["Challenge"] 24 | if req { 25 | challenge = &c 26 | } 27 | return MUMBLESparseData(p.Data, challenge) 28 | } 29 | 30 | func MUMBLESparseData(b []byte, challenge *string) (v ServerEntry, err error) { 31 | var data = bytes.NewBuffer(b) 32 | 33 | var protocolVerBytes = data.Next(4) 34 | var protocolVer = fmt.Sprintf("%d.%d.%d", protocolVerBytes[1], protocolVerBytes[2], protocolVerBytes[3]) 35 | 36 | var respChallenge = string(data.Next(8)) 37 | if challenge != nil { 38 | if *challenge != respChallenge { 39 | return MakeServerEntry(), InvalidResponseChallenge 40 | } 41 | } 42 | 43 | var currentClients uint32 44 | var currentClientsBytes = data.Next(4) 45 | _ = binary.Read(bytes.NewReader(currentClientsBytes), binary.BigEndian, ¤tClients) 46 | 47 | var maxClients uint32 48 | var maxClientsBytes = data.Next(4) 49 | _ = binary.Read(bytes.NewReader(maxClientsBytes), binary.BigEndian, &maxClients) 50 | 51 | var maxBandwidth uint32 52 | var maxBandwidthBytes = data.Next(4) 53 | _ = binary.Read(bytes.NewReader(maxBandwidthBytes), binary.BigEndian, &maxBandwidth) 54 | 55 | var rules = map[string]string{} 56 | rules["protocol-version"] = protocolVer 57 | rules["current-clients"] = fmt.Sprint(currentClients) 58 | rules["max-clients"] = fmt.Sprint(maxClients) 59 | rules["max-bandwidth"] = fmt.Sprint(maxBandwidth) 60 | if challenge != nil { 61 | rules["challenge"] = *challenge 62 | } 63 | 64 | v = MakeServerEntry() 65 | v.MaxClients = int64(maxClients) 66 | v.NumClients = int64(currentClients) 67 | v.Rules = rules 68 | 69 | return v, nil 70 | } 71 | -------------------------------------------------------------------------------- /protocol_mumbles_test.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "testing" 6 | ) 7 | 8 | func TestParsePacket(t *testing.T) { 9 | var err error 10 | s1 := Packet{Id: "ping", Data: []byte("\x00\x01\x02\x05\x67\x72\x6F\x6B\x73\x74\x61\x74\x00\x00\x00\x02\x00\x00\x02\x00\x00\x01\x19\x40")} 11 | s2 := "grokstat" 12 | expectation := ServerEntry{NumClients: int64(2), MaxClients: int64(512), NeedPass: false, Players: []PlayerEntry{}, Rules: map[string]string{"protocol-version": "1.2.5", "current-clients": "2", "max-clients": "512", "max-bandwidth": "72000", "challenge": "grokstat"}} 13 | 14 | result, resultErr := MUMBLESparseData(s1.Data, &s2) 15 | 16 | if resultErr != nil { 17 | t.Errorf(resultErr.Error()) 18 | } 19 | 20 | if len(result.Rules) != len(expectation.Rules) { 21 | err = CompError 22 | } 23 | 24 | for i := range result.Rules { 25 | if result.Rules[i] != expectation.Rules[i] { 26 | err = CompError 27 | } 28 | } 29 | 30 | if err != nil { 31 | fmt.Println(MapComparison(expectation.Rules, result.Rules)) 32 | t.Errorf(ErrorOut(expectation.Rules, result.Rules)) 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /protocol_openttdm.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "bytes" 4 | 5 | const ( 6 | _ = iota 7 | SLT_IPV4 = iota 8 | SLT_IPV6 = iota 9 | ) 10 | 11 | func OPENTTDMMakeProtocolTemplate() ProtocolEntry { 12 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "servers4"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 13 | return MasterReceiveHandler(OPENTTDMparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 14 | }, HttpProtocol: "udp", ResponseType: "Server list"}, Information: ProtocolEntryInfo{"Name": "OpenTTD Master", "DefaultRequestPort": "3978", "ProtocolVer": string(byte(2)), "IPType": string(byte(0)), "RequestPreludeTemplate": "\x05\x00\x06{{.ProtocolVer}}{{.IPType}}"}} 15 | } 16 | 17 | func OPENTTDMparsePacket(p Packet, i ProtocolEntryInfo) ([]string, error) { 18 | return OPENTTDMparseData(p.Data) 19 | } 20 | 21 | func OPENTTDMparseData(data []byte) ([]string, error) { 22 | buf := bytes.NewBuffer(data) 23 | 24 | var servers = []string{} 25 | 26 | for buf.Len() > 0 { 27 | _ = buf.Next(2) 28 | var responseNum = int(buf.Next(1)[0]) 29 | if responseNum != 7 { 30 | return nil, MalformedPacket 31 | } 32 | var ipVer = int(buf.Next(1)[0]) 33 | if ipVer == SLT_IPV6 { 34 | return nil, IPv6NotSupported 35 | } 36 | var hostnumLE = buf.Next(2) 37 | var hostnum = int(hostnumLE[1])<<8 | int(hostnumLE[0]) 38 | 39 | if buf.Len() < hostnum*6 { 40 | return nil, MalformedPacket 41 | } 42 | 43 | for i := 0; i < hostnum; i++ { 44 | entry, entryErr := ParseBinaryIPv4Entry(buf.Next(6), true) 45 | if entryErr == nil { 46 | servers = append(servers, entry) 47 | } 48 | } 49 | } 50 | 51 | return servers, nil 52 | } 53 | -------------------------------------------------------------------------------- /protocol_openttdm_test.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "testing" 4 | 5 | func TestOPENTTDMparseData(t *testing.T) { 6 | var err error 7 | var s1 = Packet{Id: "servers4", Data: []byte("\x42\x00\x07\x01\x0A\x00\x4A\xD0\x4B\xB7\x8B\x0F\xAC\xF9\xB0\x91\x8B\x0F\x53\xC7\x18\x16\x8B\x0F\x3E\x8F\x2E\x44\x8B\x0F\x79\x2A\xA0\x97\x3E\x0F\x5C\xDE\x6E\x7C\x8B\x0F\x6C\x34\xE4\x4C\x8B\x0F\xB2\xEB\xB2\x57\x8B\x0F\x80\x48\x4A\x71\x8B\x0F\x40\x8A\xE7\x36\x8B\x0F\x42\x00\x07\x01\x01\x00\x4A\xD0\x4B\xB7\x8C\x0F")} 8 | expectation := []string{"74.208.75.183:3979", "172.249.176.145:3979", "83.199.24.22:3979", "62.143.46.68:3979", "121.42.160.151:3902", "92.222.110.124:3979", "108.52.228.76:3979", "178.235.178.87:3979", "128.72.74.113:3979", "64.138.231.54:3979", "74.208.75.183:3980"} 9 | 10 | result, resultErr := OPENTTDMparseData(s1.Data) 11 | 12 | if resultErr != nil { 13 | t.Errorf(resultErr.Error()) 14 | } 15 | 16 | if len(result) != len(expectation) { 17 | err = CompError 18 | } else { 19 | for i := range result { 20 | if result[i] != expectation[i] { 21 | err = CompError 22 | break 23 | } 24 | } 25 | } 26 | 27 | if err != nil { 28 | t.Errorf(ErrorOut(expectation, result)) 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /protocol_openttds.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "encoding/binary" 6 | "fmt" 7 | "strings" 8 | 9 | "github.com/skybon/goutil" 10 | ) 11 | 12 | func OPENTTDSMakeProtocolTemplate() ProtocolEntry { 13 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "info"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 14 | return SimpleReceiveHandler(OPENTTDSparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 15 | }, HttpProtocol: "udp", ResponseType: "Server info"}, Information: ProtocolEntryInfo{"Name": "OpenTTD Server", "PreludeStarter": "", "PreludeFinisher": "\x00\x00", "RequestPreludeTemplate": "{{.PreludeStarter}}\x03{{.PreludeFinisher}}", "DefaultRequestPort": "3979"}} 16 | } 17 | 18 | func OPENTTDSparsePacket(p Packet, protocolInfo ProtocolEntryInfo) (serverEntry ServerEntry, err error) { 19 | defer func() { 20 | if r := recover(); r != nil { 21 | serverEntry = MakeServerEntry() 22 | err = MalformedPacket 23 | } 24 | }() 25 | return OPENTTDSparseData(p.Data) 26 | } 27 | 28 | func OPENTTDSparseData(p []byte) (serverEntry ServerEntry, err error) { 29 | var infoData = bytes.NewBuffer(p[3:]) 30 | 31 | var protocolVer = int(infoData.Next(1)[0]) 32 | 33 | var activeNewGRFsNum int 34 | var activeNewGRFsInfo string 35 | if protocolVer >= 4 { 36 | activeNewGRFsNum = int(infoData.Next(1)[0]) 37 | for n := 0; n < activeNewGRFsNum; n++ { 38 | NewGRFID := GetByteString(infoData.Next(4)) 39 | NewGRFMD5 := GetByteString(infoData.Next(16)) 40 | activeNewGRFsInfo = activeNewGRFsInfo + fmt.Sprintf("ID:%s/MD5:%s; ", NewGRFID, NewGRFMD5) 41 | } 42 | activeNewGRFsInfo = strings.Trim(activeNewGRFsInfo, " ;") 43 | } 44 | 45 | var timeCurrent uint32 46 | var timeStart uint32 47 | if protocolVer >= 3 { 48 | _ = binary.Read(bytes.NewReader(infoData.Next(4)), binary.BigEndian, &timeCurrent) 49 | _ = binary.Read(bytes.NewReader(infoData.Next(4)), binary.BigEndian, &timeStart) 50 | } 51 | 52 | var maxCompanies *int 53 | var currentCompanies *int 54 | var maxSpectators *int 55 | if protocolVer >= 2 { 56 | maxCompanies = goutil.IntP(int(infoData.Next(1)[0])) 57 | currentCompanies = goutil.IntP(int(infoData.Next(1)[0])) 58 | maxSpectators = goutil.IntP(int(infoData.Next(1)[0])) 59 | } 60 | serverNameBytes, _ := infoData.ReadBytes(byte(0)) 61 | serverName := string(bytes.Trim(serverNameBytes, "\x00")) 62 | 63 | serverVersionBytes, _ := infoData.ReadBytes(byte(0)) 64 | serverVersion := string(bytes.Trim(serverVersionBytes, "\x00")) 65 | 66 | languageId := int(infoData.Next(1)[0]) 67 | needPass := bool(infoData.Next(1)[0] != 0) 68 | maxClients := int(infoData.Next(1)[0]) 69 | currentClients := int(infoData.Next(1)[0]) 70 | currentSpectators := int(infoData.Next(1)[0]) 71 | 72 | if protocolVer < 3 { 73 | _ = infoData.Next(2) 74 | _ = infoData.Next(2) 75 | } 76 | 77 | mapNameBytes, _ := infoData.ReadBytes(byte(0)) 78 | mapName := string(bytes.Trim(mapNameBytes, "\x00")) 79 | 80 | var mapWidth uint16 81 | _ = binary.Read(bytes.NewReader(infoData.Next(2)), binary.BigEndian, &mapWidth) 82 | 83 | var mapHeight uint16 84 | _ = binary.Read(bytes.NewReader(infoData.Next(2)), binary.BigEndian, &mapHeight) 85 | 86 | mapSet := int(infoData.Next(1)[0]) 87 | dedicatedServer := int(infoData.Next(1)[0]) 88 | 89 | var rules = map[string]string{} 90 | rules["protocol-version"] = fmt.Sprint(protocolVer) 91 | rules["active-newgrfs-num"] = fmt.Sprint(activeNewGRFsNum) 92 | rules["active-newgrfs"] = fmt.Sprint(activeNewGRFsInfo) 93 | rules["time-current"] = fmt.Sprint(timeCurrent) 94 | rules["time-start"] = fmt.Sprint(timeStart) 95 | if maxCompanies != nil { 96 | rules["max-companies"] = fmt.Sprint(*maxCompanies) 97 | } 98 | if currentCompanies != nil { 99 | rules["current-companies"] = fmt.Sprint(*currentCompanies) 100 | } 101 | if maxSpectators != nil { 102 | rules["max-spectators"] = fmt.Sprint(*maxSpectators) 103 | } 104 | rules["server-name"] = fmt.Sprint(serverName) 105 | rules["server-version"] = fmt.Sprint(serverVersion) 106 | rules["language-id"] = fmt.Sprint(languageId) 107 | rules["need-pass"] = fmt.Sprint(needPass) 108 | rules["max-clients"] = fmt.Sprint(maxClients) 109 | rules["current-clients"] = fmt.Sprint(currentClients) 110 | rules["current-spectators"] = fmt.Sprint(currentSpectators) 111 | rules["map-name"] = fmt.Sprint(mapName) 112 | rules["map-set"] = fmt.Sprint(mapSet) 113 | rules["dedicated"] = fmt.Sprint(dedicatedServer) 114 | 115 | serverEntry = ServerEntry{Name: string(serverName), MaxClients: int64(maxClients), NumClients: int64(currentClients), NeedPass: bool(needPass), Terrain: string(mapName), Rules: rules, Players: []PlayerEntry{}} 116 | return serverEntry, nil 117 | } 118 | -------------------------------------------------------------------------------- /protocol_openttds_test.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "testing" 6 | ) 7 | 8 | func TestOPENTTDSparseData(t *testing.T) { 9 | var err error 10 | s1 := Packet{Id: "info", Data: []byte("\x86\x00\x01\x04\x03\x4D\x47\x03\x05\x2E\x96\xB9\xAB\x2B\xEA\x68\x6B\xFF\x94\x96\x1A\xD4\x33\xA7\x01\x32\x32\x33\x22\x31\x61\x80\xDA\x1B\xA6\x44\x4A\x06\xCD\x17\xF8\xFA\x79\xD6\x0A\x44\x4E\x07\x00\x48\xB3\xF9\xE4\xFD\x0D\xF2\xA7\x2B\x5F\x44\xD3\xC8\xA2\xF4\xA0\x63\xEC\x0A\x00\x63\xEC\x0A\x00\x0F\x00\x0A\x4F\x6E\x6C\x79\x46\x72\x69\x65\x6E\x64\x73\x20\x4F\x70\x65\x6E\x54\x54\x44\x20\x53\x65\x72\x76\x65\x72\x20\x23\x31\x00\x31\x2E\x35\x2E\x33\x00\x16\x00\x19\x00\x00\x52\x61\x6E\x64\x6F\x6D\x20\x4D\x61\x70\x00\x00\x04\x00\x04\x01\x01")} 11 | expectation := ServerEntry{Name: "OnlyFriends OpenTTD Server #1", Terrain: "Random Map", NumClients: int64(0), MaxClients: int64(25), NeedPass: false, Players: []PlayerEntry{}, Rules: map[string]string{"protocol-version": "4", "active-newgrfs-num": "3", "active-newgrfs": "ID:4d470305/MD5:2e96b9ab2bea686bff94961ad433a701; ID:32323322/MD5:316180da1ba6444a06cd17f8fa79d60a; ID:444e0700/MD5:48b3f9e4fd0df2a72b5f44d3c8a2f4a0", "time-current": "1676413440", "time-start": "1676413440", "max-companies": "15", "current-companies": "0", "max-spectators": "10", "server-name": "OnlyFriends OpenTTD Server #1", "server-version": "1.5.3", "language-id": "22", "need-pass": "false", "max-clients": "25", "current-clients": "0", "current-spectators": "0", "map-name": "Random Map", "map-set": "1", "dedicated": "1"}} 12 | 13 | result, resultErr := OPENTTDSparseData(s1.Data) 14 | 15 | if resultErr != nil { 16 | t.Errorf(resultErr.Error()) 17 | } 18 | 19 | if len(result.Rules) != len(expectation.Rules) { 20 | err = CompError 21 | } 22 | 23 | for i := range result.Rules { 24 | if result.Rules[i] != expectation.Rules[i] { 25 | err = CompError 26 | } 27 | } 28 | 29 | if err != nil { 30 | fmt.Println(MapComparison(expectation.Rules, result.Rules)) 31 | t.Errorf(ErrorOut(expectation.Rules, result.Rules)) 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /protocol_q3m.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "math" 6 | ) 7 | 8 | func Q3MMakeProtocolTemplate() ProtocolEntry { 9 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "servers"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 10 | return MasterReceiveHandler(Q3MParsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 11 | }, HttpProtocol: "udp", ResponseType: "Server list"}, Information: ProtocolEntryInfo{"Name": "Quake III Arena Master", "SplitterUsed": "true", "PreludeStarter": "\xFF\xFF\xFF\xFF", "RequestQueryParams": "empty full", "RequestPreludeTemplate": "{{.PreludeStarter}}getservers {{.Version}} {{.RequestQueryParams}}\n", "ResponsePreludeTemplate": "{{.PreludeStarter}}getserversResponse", "Version": "68", "DefaultRequestPort": "27950"}} 12 | } 13 | 14 | // Parses the response from Quake III Arena master server. 15 | func Q3MParsePacket(p Packet, protocolInfo ProtocolEntryInfo) ([]string, error) { 16 | data := p.Data 17 | responsePreludeTemplate, _ := protocolInfo["ResponsePreludeTemplate"] 18 | splitterUsed, _ := protocolInfo["SplitterUsed"] 19 | 20 | var header = []byte(ParseTemplate(responsePreludeTemplate, protocolInfo)) 21 | 22 | var payload, rOk = CheckPrelude(data, header) 23 | 24 | if !rOk { 25 | return nil, InvalidResponseHeader 26 | } 27 | 28 | var servers = []string{} 29 | 30 | var splitter = []byte{0x5c} 31 | var payloadSplit [][]byte 32 | if splitterUsed == "true" { 33 | payloadSplit = bytes.Split(payload, splitter) 34 | } else { 35 | if math.Mod(float64(len(payload)), 6.0) != 0.0 { 36 | return nil, InvalidResponseLength 37 | } 38 | for i := 0; i < int(len(payload)/6.0); i++ { 39 | payloadSplit = append(payloadSplit, payload[i:i+6]) 40 | } 41 | } 42 | for _, entryRaw := range payloadSplit { 43 | var serverEntry, entryErr = ParseBinaryIPv4Entry(entryRaw, false) 44 | 45 | if entryErr == nil { 46 | servers = append(servers, serverEntry) 47 | } 48 | } 49 | return servers, nil 50 | } 51 | -------------------------------------------------------------------------------- /protocol_q3s.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "math" 6 | "strconv" 7 | "strings" 8 | "time" 9 | ) 10 | 11 | func Q3SMakeProtocolTemplate() ProtocolEntry { 12 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "status", ResponsePacketNum: 1}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 13 | return SimpleReceiveHandler(Q3SParsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 14 | }, HttpProtocol: "udp", ResponseType: "Server info"}, Information: ProtocolEntryInfo{"Name": "Quake III Arena", "PreludeStarter": "\xFF\xFF\xFF\xFF", "Challenge": "GrokStat_" + string(time.Now().Unix()), "RequestPreludeTemplate": "{{.PreludeStarter}}getstatus {{.Challenge}}\n", "headerTemplate": "{{.PreludeStarter}}statusResponse", "ServerNameRule": "sv_hostname", "NeedPassRule": "g_needpass", "TerrainRule": "mapname", "ModNameRule": "game", "GameTypeRule": "g_gametype", "MaxClientsRule": "sv_maxclients", "SecureRule": "sv_punkbuster", "Version": "68", "DefaultRequestPort": "27950"}} 15 | } 16 | 17 | func Q3SParsePlayerstring(arr [][]byte) []PlayerEntry { 18 | var v = []PlayerEntry{} 19 | for _, b := range arr { 20 | s := bytes.Split(b, []byte(" ")) 21 | if len(s) < 3 { 22 | continue 23 | } 24 | ping, _ := strconv.ParseInt(string(s[1]), 10, 64) 25 | e := MakePlayerEntry() 26 | e.Name = strings.Trim(string(bytes.Join(s[2:], []byte(" "))), `"`) 27 | e.Ping = ping 28 | e.Info["Score"] = string(s[0]) 29 | v = append(v, e) 30 | } 31 | return v 32 | } 33 | 34 | func Q3SParseRulestring(str [][]byte) map[string]string { 35 | var ruleArray = map[int][]string{} 36 | var m = map[string]string{} 37 | for i, e := range str { 38 | vstr := string(e) 39 | if len(vstr) == 0 { 40 | continue 41 | } 42 | if math.Mod(float64(i), 2) != 0 { 43 | ruleArray[i] = []string{vstr} // Key 44 | } else { 45 | ruleArray[i-1] = append(ruleArray[i-1], vstr) // Value 46 | } 47 | } 48 | for _, e := range ruleArray { 49 | if len(e) < 2 { 50 | continue 51 | } 52 | var k = e[0] 53 | var v = e[1] 54 | m[k] = v 55 | } 56 | 57 | return m 58 | } 59 | 60 | // Parses the response from Quake III Arena server 61 | func Q3SParsePacket(p Packet, info ProtocolEntryInfo) (entry ServerEntry, err error) { 62 | defer func() { 63 | if r := recover(); r != nil { 64 | err = MalformedPacket 65 | } 66 | }() 67 | packetPing := p.Ping 68 | response := p.Data 69 | headerTemplate, _ := info["headerTemplate"] 70 | header := []byte(ParseTemplate(headerTemplate, info)) 71 | 72 | sepBody := []byte{0xa} 73 | sepRules := []byte{0x5c} 74 | 75 | if bytes.Equal(response[:len(header)], header) != true { 76 | return entry, InvalidResponseHeader 77 | } 78 | 79 | payload := bytes.Trim(response[len(header):], string(sepBody)) 80 | payloadSplit := bytes.Split(payload, sepBody) 81 | 82 | rulePlayerBoundary := len(payloadSplit) 83 | for i, line := range payloadSplit { 84 | if line[0] != sepRules[0] { 85 | rulePlayerBoundary = i 86 | break 87 | } 88 | } 89 | 90 | ruleByteArray := bytes.Join(payloadSplit[:rulePlayerBoundary], sepRules) 91 | playerByteArray := payloadSplit[rulePlayerBoundary:] 92 | 93 | ruleByteArraySplit := bytes.Split(ruleByteArray, sepRules) 94 | 95 | var players = Q3SParsePlayerstring(playerByteArray) 96 | var rules = Q3SParseRulestring(ruleByteArraySplit) 97 | 98 | entry = MakeServerEntry() 99 | entry.Ping = packetPing 100 | entry.Players = players 101 | entry.NumClients = int64(len(players)) 102 | entry.Rules = rules 103 | 104 | serverNameRule, serverNameRuleOk := info["ServerNameRule"] 105 | if serverNameRuleOk { 106 | serverName, _ := rules[serverNameRule] 107 | entry.Name = strings.TrimSpace(serverName) 108 | } 109 | 110 | needPassRule, needPassRuleOk := info["NeedPassRule"] 111 | if needPassRuleOk { 112 | needPass, _ := rules[needPassRule] 113 | entry.NeedPass, _ = strconv.ParseBool(needPass) 114 | } 115 | 116 | terrainRule, terrainRuleOk := info["TerrainRule"] 117 | if terrainRuleOk { 118 | terrain, _ := rules[terrainRule] 119 | entry.Terrain = strings.TrimSpace(terrain) 120 | } 121 | 122 | modNameRule, modNameRuleOk := info["ModNameRule"] 123 | if modNameRuleOk { 124 | modName, _ := rules[modNameRule] 125 | entry.ModName = strings.TrimSpace(modName) 126 | } 127 | 128 | gameTypeRule, gameTypeRuleOk := info["GameTypeRule"] 129 | if gameTypeRuleOk { 130 | gameType, _ := rules[gameTypeRule] 131 | entry.GameType = strings.TrimSpace(gameType) 132 | } 133 | 134 | secureRule, secureRuleOk := info["SecureRule"] 135 | if secureRuleOk { 136 | secure, _ := rules[secureRule] 137 | entry.Secure, _ = strconv.ParseBool(secure) 138 | } 139 | 140 | maxClientsRule, maxClientsRuleOk := info["MaxClientsRule"] 141 | if maxClientsRuleOk { 142 | maxClients, maxClientsOk := rules[maxClientsRule] 143 | if maxClientsOk { 144 | entry.MaxClients, _ = strconv.ParseInt(strings.TrimSpace(maxClients), 10, 64) 145 | } 146 | } 147 | 148 | numBotsRule, numBotsRuleOk := info["NumBotsRule"] 149 | if numBotsRuleOk { 150 | numBots, numBotsOk := rules[numBotsRule] 151 | if numBotsOk { 152 | entry.NumBots, _ = strconv.ParseInt(strings.TrimSpace(numBots), 10, 64) 153 | } 154 | } 155 | 156 | return entry, nil 157 | } 158 | -------------------------------------------------------------------------------- /protocol_steam.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "fmt" 6 | "math" 7 | ) 8 | 9 | func STEAMMakeProtocolTemplate() ProtocolEntry { 10 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakeSteamPayload, RequestPackets: []RequestPacket{RequestPacket{Id: "STEAM_REQUEST"}}, HandlerFunc: SteamHandler, HttpProtocol: "udp", ResponseType: "Server list"}, Information: ProtocolEntryInfo{"Name": "Steam Master", "DefaultRequestPort": "27011", "ResponsePreludeTemplate": "\xFF\xFF\xFF\xFF\x66\x0A"}} 11 | } 12 | 13 | func makeSteamRequest(lastIp string) []byte { 14 | return []byte(fmt.Sprintf("\x31\xff%s\x00\x00", lastIp)) 15 | } 16 | 17 | func MakeSteamRequestPacket(packetId string, protocolInfo ProtocolEntryInfo) Packet { 18 | return Packet{Data: makeSteamRequest("0.0.0.0:0")} 19 | } 20 | 21 | func MakeSteamPayload(packet Packet, protocolEntryInfo ProtocolEntryInfo) Packet { 22 | if packet.Id == "STEAM_REQUEST" { 23 | packet.Data = makeSteamRequest("0.0.0.0:0") 24 | } 25 | 26 | return packet 27 | } 28 | 29 | func SteamHandler(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 30 | sendPackets = make([]Packet, 0) 31 | 32 | protocolId := packet.ProtocolId 33 | protocol, protocolExists := protocolCollection.Get(protocolId) 34 | if !protocolExists { 35 | return sendPackets 36 | } 37 | protocolInfo := protocol.Information 38 | remoteIp := packet.RemoteAddr 39 | 40 | preludeTemplate, pTOk := protocolInfo["ResponsePreludeTemplate"] 41 | var body []byte 42 | var preludeOk bool 43 | if pTOk { 44 | prelude := []byte(preludeTemplate) 45 | body, preludeOk = CheckPrelude(packet.Data, prelude) 46 | } else { 47 | body = packet.Data 48 | preludeOk = true 49 | } 50 | 51 | if preludeOk { 52 | bodyOk := math.Mod(float64(len(body)), 6.0) == 0 53 | if !bodyOk { 54 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("STEAM - %s - Invalid body length.", remoteIp)} 55 | return sendPackets 56 | } 57 | 58 | pairList := []HostProtocolIdPair{} 59 | 60 | ipBuf := bytes.NewBuffer(body) 61 | for { 62 | ipAddrRaw := ipBuf.Next(6) 63 | ipAddr, ipErr := ParseBinaryIPv4Entry(ipAddrRaw, false) 64 | if ipErr != nil { 65 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("STEAM - %s - Error parsing IP in response.", remoteIp)} 66 | return sendPackets 67 | } 68 | masterOf, mOk := protocolInfo["MasterOf"] 69 | if mOk { 70 | pair := HostProtocolIdPair{RemoteAddr: ipAddr, ProtocolId: masterOf} 71 | protocolMappingInChan <- pair 72 | pairList = append(pairList, pair) 73 | } 74 | if ipBuf.Len() == 0 { 75 | break 76 | } 77 | } 78 | 79 | lastIp := pairList[len(pairList)-1].RemoteAddr 80 | 81 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: fmt.Sprintf("STEAM - %s - Last IP: %s.", remoteIp, lastIp)} 82 | if lastIp == "0.0.0.0:0" { 83 | messageChan <- ConsoleMsg{Type: MSG_DEBUG, Message: "STEAM: Query complete."} 84 | } else { 85 | sendPacket := Packet{Id: "STEAM_REQUEST", Data: []byte(makeSteamRequest(lastIp)), RemoteAddr: remoteIp, ProtocolId: "STEAM"} 86 | sendPackets = append(sendPackets, sendPacket) 87 | } 88 | 89 | for _, pair := range pairList { 90 | sendPackets = append(sendPackets, MakeSendPackets(pair, protocolCollection)...) 91 | } 92 | 93 | masterServerEntry := ServerEntry{Protocol: packet.ProtocolId, Host: packet.RemoteAddr, Name: "Steam Master Server"} 94 | serverEntryChan <- masterServerEntry 95 | 96 | } else { 97 | messageChan <- ConsoleMsg{Type: MSG_MINOR, Message: fmt.Sprintf("STEAM - %s - Prelude Error", remoteIp)} 98 | } 99 | return sendPackets 100 | } 101 | -------------------------------------------------------------------------------- /protocol_teeworldsm.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "fmt" 6 | ) 7 | 8 | func TEEWORLDSMMakeProtocolTemplate() ProtocolEntry { 9 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "servers"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 10 | return MasterReceiveHandler(TEEWORLDSMparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 11 | }, HttpProtocol: "udp", ResponseType: "Server list"}, Information: ProtocolEntryInfo{"Name": "Teeworlds Master", "RequestPreludeStarter": "\x20\x00\x00\x00\x00\x00\xFF\xFF\xFF\xFF", "RequestPreludeTemplate": "{{.RequestPreludeStarter}}req2", "ResponsePreludeStarter": "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", "ResponsePreludeTemplate": "{{.ResponsePreludeStarter}}lis2", "DefaultRequestPort": "8300"}} 12 | } 13 | 14 | func parseMasterServerEntry(entryRaw []byte) (string, error) { 15 | if len(entryRaw) != 8 { 16 | return "", InvalidServerEntryInMasterResponse 17 | } 18 | 19 | if entryRaw[0] != byte(0xff) || entryRaw[1] != byte(0xff) { 20 | return "", InvalidServerEntryInMasterResponse 21 | } 22 | 23 | entry := make([]int, 6) 24 | for i, v := range entryRaw[2:] { 25 | entry[i] = int(v) 26 | } 27 | a := entry[0] 28 | b := entry[1] 29 | c := entry[2] 30 | d := entry[3] 31 | port := entry[4]*(16*16) + entry[5] 32 | 33 | if a == 0 { 34 | return "", InvalidServerEntryInMasterResponse 35 | } 36 | 37 | serverEntry := fmt.Sprintf("%d.%d.%d.%d:%d", a, b, c, d, port) 38 | 39 | return serverEntry, nil 40 | } 41 | 42 | // Parses the response from Teeworlds master server. 43 | func TEEWORLDSMparsePacket(responsePacket Packet, protocolInfo ProtocolEntryInfo) ([]string, error) { 44 | response := responsePacket.Data 45 | responsePreludeTemplate, _ := protocolInfo["ResponsePreludeTemplate"] 46 | responsePrelude := []byte(ParseTemplate(responsePreludeTemplate, protocolInfo)) 47 | 48 | splitter := []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} 49 | 50 | servers := []string{} 51 | 52 | if bytes.Equal(response[:len(responsePrelude)], responsePrelude) != true { 53 | return nil, InvalidResponseHeader 54 | } 55 | 56 | responseBody := response[len(responsePrelude):] 57 | responseBodySplit := bytes.Split(responseBody, splitter) 58 | for _, entryRaw := range responseBodySplit { 59 | serverEntry, entryErr := parseMasterServerEntry(entryRaw) 60 | 61 | if entryErr == nil { 62 | servers = append(servers, serverEntry) 63 | } 64 | } 65 | return servers, nil 66 | } 67 | -------------------------------------------------------------------------------- /protocol_teeworldss.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "math" 6 | "strconv" 7 | "strings" 8 | ) 9 | 10 | func TEEWORLDSSMakeProtocolTemplate() ProtocolEntry { 11 | return ProtocolEntry{Base: ProtocolEntryBase{MakePayloadFunc: MakePayload, RequestPackets: []RequestPacket{RequestPacket{Id: "info"}}, HandlerFunc: func(packet Packet, protocolCollection *ProtocolCollection, messageChan chan<- ConsoleMsg, protocolMappingInChan chan<- HostProtocolIdPair, serverEntryChan chan<- ServerEntry) (sendPackets []Packet) { 12 | return SimpleReceiveHandler(TEEWORLDSSparsePacket, packet, protocolCollection, messageChan, protocolMappingInChan, serverEntryChan) 13 | }, HttpProtocol: "udp", ResponseType: "Server info"}, Information: ProtocolEntryInfo{"Name": "Teeworlds Server", "PreludeStarter": "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", "PreludeFinisher": "\x00", "RequestPreludeTemplate": "{{.PreludeStarter}}gie3{{.PreludeFinisher}}", "ResponsePreludeTemplate": "{{.PreludeStarter}}inf3", "DefaultRequestPort": "8305"}} 14 | } 15 | 16 | func parsePlayerstring(playerByteArray [][]byte) ([]PlayerEntry, error) { 17 | if math.Mod(float64(len(playerByteArray)), float64(5)) != 0.0 { 18 | return nil, InvalidPlayerStringLength 19 | } 20 | 21 | var playerArray = []PlayerEntry{} 22 | 23 | playerNum := int(len(playerByteArray) / 5) 24 | for i := 0; i < playerNum; i++ { 25 | entryRaw := playerByteArray[i*5 : i*5+5] 26 | playerEntry := MakePlayerEntry() 27 | playerEntry.Name = string(entryRaw[0]) 28 | playerEntry.Info["clan"] = string(entryRaw[1]) 29 | playerEntry.Info["country"] = string(entryRaw[2]) 30 | playerEntry.Info["score"] = string(entryRaw[3]) 31 | playerEntry.Info["is_player"] = string(entryRaw[4]) 32 | 33 | playerArray = append(playerArray, playerEntry) 34 | } 35 | return playerArray, nil 36 | } 37 | 38 | func parseRulestring(rulestring [][]byte) (map[string]string, error) { 39 | if len(rulestring) < 10 { 40 | return map[string]string{}, InvalidRuleStringLength 41 | } 42 | 43 | ruleMap := make(map[string]string) 44 | 45 | ruleMap["token"] = string(rulestring[0]) 46 | ruleMap["version"] = string(rulestring[1]) 47 | ruleMap["name"] = string(rulestring[2]) 48 | ruleMap["map"] = string(rulestring[3]) 49 | ruleMap["gametype"] = string(rulestring[4]) 50 | ruleMap["flags"] = string(rulestring[5]) 51 | ruleMap["num_players"] = string(rulestring[6]) 52 | ruleMap["max_players"] = string(rulestring[7]) 53 | ruleMap["num_clients"] = string(rulestring[8]) 54 | ruleMap["max_clients"] = string(rulestring[9]) 55 | 56 | return ruleMap, nil 57 | } 58 | 59 | func TEEWORLDSSParseData(data [][]byte) (ServerEntry, error) { 60 | var v = MakeServerEntry() 61 | 62 | rulePlayerBoundary := 10 63 | 64 | var ruleByteArray [][]byte 65 | var playerByteArray [][]byte 66 | if len(data) >= rulePlayerBoundary { 67 | ruleByteArray = data[:rulePlayerBoundary] 68 | } 69 | 70 | if len(data) > rulePlayerBoundary { 71 | playerByteArray = data[rulePlayerBoundary:] 72 | } 73 | 74 | if len(data) < rulePlayerBoundary { 75 | return MakeServerEntry(), InvalidResponseLength 76 | } 77 | 78 | players, playerErr := parsePlayerstring(playerByteArray) 79 | if playerErr != nil { 80 | return MakeServerEntry(), playerErr 81 | } 82 | 83 | rules, ruleErr := parseRulestring(ruleByteArray) 84 | if ruleErr != nil { 85 | return MakeServerEntry(), ruleErr 86 | } 87 | 88 | v.Players = players 89 | 90 | hostName, _ := rules["name"] 91 | v.Name = strings.TrimSpace(hostName) 92 | 93 | needPass, _ := rules["flags"] 94 | v.NeedPass, _ = strconv.ParseBool(needPass) 95 | 96 | terrain, _ := rules["map"] 97 | v.Terrain = strings.TrimSpace(terrain) 98 | 99 | v.ModName = "Teeworlds" 100 | 101 | gameType, _ := rules["gametype"] 102 | v.GameType = strings.TrimSpace(gameType) 103 | 104 | v.NumClients = int64(len(players)) 105 | 106 | maxClients, nc_ok := rules["max_clients"] 107 | if nc_ok { 108 | v.MaxClients, _ = strconv.ParseInt(strings.TrimSpace(maxClients), 10, 64) 109 | } 110 | 111 | v.Secure = false 112 | 113 | v.Rules = rules 114 | 115 | return v, nil 116 | } 117 | 118 | // Parses the response from Quake III Arena server 119 | func TEEWORLDSSparsePacket(p Packet, protocolInfo ProtocolEntryInfo) (ServerEntry, error) { 120 | packetPing := p.Ping 121 | response := p.Data 122 | responsePreludeTemplate, _ := protocolInfo["ResponsePreludeTemplate"] 123 | responsePrelude := []byte(ParseTemplate(responsePreludeTemplate, protocolInfo)) 124 | 125 | var sep = []byte{0x0} 126 | 127 | if bytes.Equal(response[:len(responsePrelude)], responsePrelude) != true { 128 | return MakeServerEntry(), InvalidResponseHeader 129 | } 130 | 131 | b := bytes.Trim(response[len(responsePrelude):], string(sep)) 132 | 133 | var entry, err = TEEWORLDSSParseData(bytes.Split(b, sep)) 134 | if err != nil { 135 | return entry, err 136 | } 137 | 138 | entry.Ping = packetPing 139 | 140 | return entry, nil 141 | } 142 | -------------------------------------------------------------------------------- /protocols.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "sync" 4 | 5 | type ProtocolConfig struct { 6 | Id string `toml:"Id"` 7 | Template string `toml:"Template"` 8 | Overrides map[string]string `toml:"Overrides"` 9 | } 10 | 11 | type ProtocolCollection struct { 12 | sync.Mutex 13 | data map[string]ProtocolEntry 14 | } 15 | 16 | func (c *ProtocolCollection) Get(k string) (ProtocolEntry, bool) { 17 | c.Lock() 18 | defer c.Unlock() 19 | var v, exists = c.data[k] 20 | return v, exists 21 | } 22 | 23 | func (c *ProtocolCollection) Set(k string, v ProtocolEntry) { 24 | c.Lock() 25 | defer c.Unlock() 26 | c.data[k] = v 27 | } 28 | 29 | func (c *ProtocolCollection) Delete(k string) { 30 | c.Lock() 31 | defer c.Unlock() 32 | delete(c.data, k) 33 | } 34 | 35 | func (c *ProtocolCollection) Map() map[string]ProtocolEntry { 36 | c.Lock() 37 | defer c.Unlock() 38 | 39 | var m = make(map[string]ProtocolEntry, len(c.data)) 40 | for k, v := range c.data { 41 | m[k] = v 42 | } 43 | return m 44 | } 45 | 46 | func MakeProtocolCollection() *ProtocolCollection { 47 | return &ProtocolCollection{data: map[string]ProtocolEntry{}} 48 | } 49 | 50 | // Returns a map with protocols initialized 51 | func LoadProtocols(configData []ProtocolConfig) *ProtocolCollection { 52 | infoBase := ProtocolEntryInfo{`x20`: "\x20", `xFF`: "\xFF"} 53 | 54 | templates := make(map[string]func() ProtocolEntry) 55 | 56 | templates["Q3M"] = Q3MMakeProtocolTemplate 57 | templates["Q3S"] = Q3SMakeProtocolTemplate 58 | templates["TEEWORLDSM"] = TEEWORLDSMMakeProtocolTemplate 59 | templates["TEEWORLDSS"] = TEEWORLDSSMakeProtocolTemplate 60 | templates["OPENTTDM"] = OPENTTDMMakeProtocolTemplate 61 | templates["OPENTTDS"] = OPENTTDSMakeProtocolTemplate 62 | templates["STEAM"] = STEAMMakeProtocolTemplate 63 | templates["A2S"] = A2SMakeProtocolTemplate 64 | templates["MUMBLES"] = MUMBLESMakeProtocolTemplate 65 | 66 | var protMap = make(map[string]ProtocolEntry, len(templates)) 67 | for k, v := range templates { 68 | entry := v() 69 | for k1, v1 := range infoBase { 70 | entry.Information[k1] = v1 71 | } 72 | protMap[k] = entry 73 | } 74 | 75 | var m = MakeProtocolCollection() 76 | 77 | for _, configEntry := range configData { 78 | entryId := configEntry.Id 79 | templateId := configEntry.Template 80 | overrides := configEntry.Overrides 81 | 82 | entryTemplate, eOk := protMap[templateId] 83 | if eOk == false { 84 | continue 85 | } 86 | protocolEntry := MakeProtocolEntry(entryTemplate) 87 | for k, v := range overrides { 88 | protocolEntry.Information[k] = v 89 | } 90 | protocolEntry.Id = entryId 91 | protocolEntry.Information["Id"] = entryId 92 | 93 | m.Set(entryId, protocolEntry) 94 | } 95 | 96 | return m 97 | } 98 | -------------------------------------------------------------------------------- /util.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "fmt" 6 | "os" 7 | "sort" 8 | "text/template" 9 | "time" 10 | ) 11 | 12 | func ParseTemplate(templ string, keys map[string]string) string { 13 | buf := new(bytes.Buffer) 14 | t, _ := template.New("New template").Parse(templ) 15 | t.Execute(buf, keys) 16 | return buf.String() 17 | } 18 | 19 | func RemoveDuplicates(ListA []string) []string { 20 | tempDict := make(map[string]bool, len(ListA)) 21 | for _, entry := range ListA { 22 | tempDict[entry] = true 23 | } 24 | 25 | ListB := make([]string, 0, len(tempDict)) 26 | for entry, _ := range tempDict { 27 | ListB = append(ListB, entry) 28 | } 29 | return ListB 30 | } 31 | 32 | func CheckError(err error) { 33 | if err != nil { 34 | fmt.Printf("Error: %s\n", err.Error()) 35 | os.Exit(0) 36 | } 37 | } 38 | 39 | func ByteLEToInt64(byteArray []byte) int64 { 40 | var result int64 41 | j := uint(0) 42 | for i := 0; i < len(byteArray); i++ { 43 | result += int64(byteArray[i]) << j 44 | j += 8 45 | } 46 | return result 47 | } 48 | 49 | func ConvertByteArray32to8(byteArray []byte) []byte { 50 | newByteArray := make([]byte, len(byteArray)*2) 51 | i := 0 52 | for _, v := range byteArray { 53 | newByteArray[i] = v / 16 54 | i += 1 55 | newByteArray[i] = v - (v * (v / 16)) 56 | i += 1 57 | } 58 | return newByteArray 59 | } 60 | 61 | func Clamp(value, min, max int) int { 62 | clamp := sort.IntSlice([]int{value, min, max}) 63 | clamp.Sort() 64 | return clamp[1] 65 | } 66 | 67 | func GetByteString(byteArray []byte) string { 68 | return fmt.Sprintf("%x", byteArray) 69 | } 70 | 71 | func Print(enabled bool, data interface{}) { 72 | if enabled != true { 73 | return 74 | } 75 | fmt.Print(data) 76 | } 77 | 78 | func PrintWait(enabled bool, interval int, active chan struct{}) { 79 | if enabled != true { 80 | return 81 | } 82 | for { 83 | select { 84 | default: 85 | os.Stdout.Write([]byte(".")) 86 | os.Stdout.Sync() 87 | time.Sleep(time.Duration(interval) * time.Millisecond) 88 | case <-active: 89 | return 90 | } 91 | } 92 | } 93 | 94 | func PrintReplace(enabled bool, data string, replaceLength int) (newLength int) { 95 | if enabled != true { 96 | return 97 | } 98 | for i := 0; i < replaceLength; i++ { 99 | fmt.Print("\033[D") 100 | } 101 | fmt.Print(data) 102 | newLength = len(data) 103 | return newLength 104 | } 105 | 106 | func PrintEmptyLine(enabled bool) { 107 | if enabled != true { 108 | return 109 | } 110 | fmt.Print("\n") 111 | } 112 | 113 | func ErrorOut(expectation interface{}, result interface{}) string { 114 | return fmt.Sprintf("\nExpected:\n%+v\n\nReceived:\n%+v\n", expectation, result) 115 | } 116 | 117 | func MapComparison(A, B map[string]string) (length, keys string) { 118 | length = fmt.Sprintf("Length:\nA:%d\nB:%d\n\n", len(A), len(B)) 119 | for k, _ := range A { 120 | keys = keys + fmt.Sprintf("\nKey: %s\nA: %s\nB: %s\n", k, A[k], B[k]) 121 | } 122 | return length, keys 123 | } 124 | -------------------------------------------------------------------------------- /util_test.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "testing" 4 | 5 | func TestByteLEToInt64(t *testing.T) { 6 | var err error 7 | s1 := []byte{0x60, 0x09} 8 | expectation := int64(2400) 9 | 10 | result := ByteLEToInt64(s1) 11 | 12 | if result != expectation { 13 | err = CompError 14 | } 15 | 16 | if err != nil { 17 | t.Errorf(ErrorOut(expectation, result)) 18 | } 19 | } 20 | --------------------------------------------------------------------------------