├── LICENSE ├── Makefile ├── README.md ├── luasrc ├── controller │ └── tcpdump.lua └── view │ └── tcpdump.htm └── po └── zh-cn └── tcpdump.po /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | 203 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | # Copyright (C) 2016 Openwrt.org 2 | # 3 | # This is free software, licensed under the Apache License, Version 2.0 . 4 | # 5 | # Copyright (C) 2019, KFERMercer 6 | # 7 | 8 | include $(TOPDIR)/rules.mk 9 | 10 | LUCI_TITLE:=LuCI support for tcpdump 11 | LUCI_DEPENDS:=+tcpdump 12 | LUCI_PKGARCH:=all 13 | PKG_NAME:=luci-app-tcpdump 14 | PKG_VERSION:=1.0 15 | PKG_RELEASE:=2 16 | PKG_MAINTAINER:= 17 | 18 | include $(TOPDIR)/feeds/luci/luci.mk 19 | 20 | # call BuildPackage - OpenWrt buildroot signature 21 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # luci-app-tcpdump 2 | 3 | LuCI interface for tcpdump.\ 4 | It can be used to capture live TCP traffic for analysis. 5 | 6 | ## How to build into firmware: 7 | 8 | `git clone https://github.com/KFERMercer/luci-app-tcpdump.git ./package/luci-app-tcpdump` 9 | 10 | `make menuconfig` 11 | 12 | 13 | ### Original codes built by [MacManas](https://github.com/MacManas/luci-app-tcpdump). 14 | -------------------------------------------------------------------------------- /luasrc/controller/tcpdump.lua: -------------------------------------------------------------------------------- 1 | --[[ 2 | LuCI - Lua Configuration Interface 3 | 4 | 5 | Copyright 2013-2014 Diego Manas 6 | 7 | Copyright (C) 2019, KFERMercer 8 | 9 | Licensed under the Apache License, Version 2.0 (the "License"); 10 | you may not use this file except in compliance with the License. 11 | You may obtain a copy of the License at 12 | 13 | http://www.apache.org/licenses/LICENSE-2.0 14 | 15 | $Id$ 16 | 17 | 2019-07-12 modified by KFERMercer : 18 | format code 19 | 20 | ]] -- 21 | module("luci.controller.tcpdump", package.seeall) 22 | 23 | tcpdump_root_folder = "/tmp/tcpdump/" 24 | tcpdump_cap_folder = tcpdump_root_folder .. "cap/" 25 | tcpdump_filter_folder = tcpdump_root_folder .. "filter/" 26 | pid_file = tcpdump_root_folder .. "tcpdump.pid" 27 | log_file = tcpdump_root_folder .. "tcpdump.log" 28 | out_file = tcpdump_root_folder .. "tcpdump.out" 29 | sleep_file = tcpdump_root_folder .. "tcpdump.sleep" 30 | 31 | function index() 32 | template("myapp-mymodule/helloworld") 33 | entry({"admin", "network", "tcpdump"}, template("tcpdump"), _ "Tcpdump", 70).dependent = 34 | false 35 | 36 | page = entry({"admin", "network", "tcpdump", "capture_start"}, 37 | call("capture_start"), nil) 38 | page.leaf = true 39 | 40 | page = entry({"admin", "network", "tcpdump", "capture_stop"}, 41 | call("capture_stop"), nil) 42 | page.leaf = true 43 | 44 | page = entry({"admin", "network", "tcpdump", "update"}, call("update"), nil) 45 | page.leaf = true 46 | 47 | page = entry({"admin", "network", "tcpdump", "capture_get"}, 48 | call("capture_get"), nil) 49 | page.leaf = true 50 | 51 | page = entry({"admin", "network", "tcpdump", "capture_remove"}, 52 | call("capture_remove"), nil) 53 | page.leaf = true 54 | 55 | end 56 | 57 | function param_check(ifname, stop_value, stop_unit, filter) 58 | local check = false 59 | local message = {} 60 | -- Check interface 61 | -- Check for empty interface 62 | if ifname == nil or ifname == '' then 63 | table.insert(message, "Interface name is null or blank.") 64 | end 65 | -- Check for existing interface 66 | local nixio = require "nixio" 67 | for k, v in ipairs(nixio.getifaddrs()) do 68 | if v.family == "packet" then 69 | if ifname == v.name then 70 | check = true 71 | break 72 | end 73 | end 74 | end 75 | -- Check special interface name "any" 76 | if iface == 'any' then check = true end 77 | -- ERROR interface name not found 78 | if not check then 79 | table.insert(message, "Interface does not exist or is not valid.") 80 | end 81 | -- Check stop condition value 82 | if tonumber(stop_value) == nil then 83 | check = false 84 | table.insert(message, "Capture length parameter must be a number.") 85 | end 86 | -- Check stop condition flag 87 | if stop_unit == nil then 88 | check = false 89 | table.insert(message, "Capture unit is null or blank.") 90 | else 91 | stop_unit = string.upper(stop_unit) 92 | if stop_unit ~= "T" and stop_unit ~= "P" then 93 | check = false 94 | table.insert(message, "Capture unit must be Time(T) or packet(P).") 95 | end 96 | end 97 | return check, message 98 | end 99 | 100 | function capture_start(ifname, stop_value, stop_unit, filter) 101 | local active, pid = capture_active() 102 | local res = {} 103 | local cmd = {} 104 | if active then 105 | cmd["ok"] = false 106 | cmd["msg"] = {"Previous capture is still ongoing!"} 107 | else 108 | local check, msg = param_check(ifname, stop_value, stop_unit, filter) 109 | if not check then 110 | cmd["ok"] = false 111 | cmd["msg"] = msg 112 | else 113 | -- Create temporal folders 114 | os.execute("mkdir -p " .. tcpdump_cap_folder) 115 | os.execute("mkdir -p " .. tcpdump_filter_folder) 116 | local prefix = "capture_" .. os.date("%Y-%m-%d_%H.%M.%S") 117 | local pcap_file = tcpdump_cap_folder .. prefix .. ".pcap" 118 | local filter_file = tcpdump_filter_folder .. prefix .. ".filter" 119 | string_to_file(filter_file, filter) 120 | string_to_file(out_file, prefix) 121 | tcpdump_start(ifname, stop_value, stop_unit, filter_file, pcap_file) 122 | res["filter"] = filter 123 | cmd["ok"] = true 124 | cmd["msg"] = {"Capture in progress.."} 125 | end 126 | end 127 | res["cmd"] = cmd 128 | res["capture"] = capture() 129 | res["list"] = list() 130 | luci.http.prepare_content("application/json") 131 | luci.http.write_json(res) 132 | end 133 | 134 | function string_to_file(file, data) 135 | if data == nil then data = "" end 136 | local f = io.open(file, "w") 137 | f:write(data) 138 | f:close() 139 | end 140 | 141 | function tcpdump_start(ifname, stop_value, stop_unit, filter_file, pcap_file) 142 | local cmd = "tcpdump -i %s -F %s -w %s" 143 | cmd = string.format(cmd, ifname, filter_file, pcap_file) 144 | -- Packet limit if required 145 | if tonumber(stop_value) ~= 0 and stop_unit == "P" then 146 | cmd = cmd .. " -c " .. stop_value 147 | end 148 | -- Mute output and record PID on pid_file 149 | cmd = string.format("%s &> %s & echo $! > %s", cmd, log_file, pid_file) 150 | os.execute(cmd) 151 | -- Time limit if required 152 | if tonumber(stop_value) ~= 0 and stop_unit == "T" then 153 | local f = io.open(pid_file, "r") 154 | if f ~= nil then 155 | local pid = f:read() 156 | f:close() 157 | local t_out = 158 | string.format("sleep %s && kill %s &", stop_value, pid) 159 | os.execute(t_out) 160 | end 161 | end 162 | end 163 | 164 | function capture_stop() 165 | local res = {} 166 | local cmd = {} 167 | local _, active, pid = capture() 168 | if active then 169 | luci.sys.process.signal(pid, 9) 170 | cmd["ok"] = true 171 | cmd["msg"] = {"Capture has been terminated"} 172 | else 173 | cmd["ok"] = false 174 | cmd["msg"] = {"There was not active capture!"} 175 | end 176 | capture_cleanup() 177 | res["cmd"] = cmd 178 | res["capture"] = capture() 179 | res["list"] = list() 180 | luci.http.prepare_content("application/json") 181 | luci.http.write_json(res) 182 | end 183 | 184 | function capture_active() 185 | local f = io.open(pid_file, "r") 186 | if f ~= nil then 187 | pid = f:read() 188 | f:close() 189 | -- Check it is a legal PID and still alive 190 | if tonumber(pid) ~= nil and luci.sys.process.signal(pid, 0) then 191 | return true, pid 192 | end 193 | end 194 | return false, nil 195 | end 196 | 197 | function capture_log() 198 | local log 199 | local f = io.open(log_file, "r") 200 | if f ~= nil then 201 | log = f:read("*all") 202 | f:close() 203 | else 204 | log = "" 205 | end 206 | return log 207 | end 208 | 209 | function capture_name() 210 | local cap_name = nil 211 | local f = io.open(out_file, "r") 212 | if f ~= nil then 213 | cap_name = f:read() 214 | f:close() 215 | end 216 | return cap_name 217 | end 218 | 219 | function capture() 220 | local fs = require "nixio.fs" 221 | local res = {} 222 | local active, pid = capture_active() 223 | local msg 224 | res["active"] = active 225 | res["log"] = capture_log() 226 | if active then 227 | res["msg"] = "Capture in progress.." 228 | res["cap_name"] = capture_name() 229 | elseif fs.access(pid_file) then 230 | capture_cleanup() 231 | res["msg"] = "Process seems to be dead, removing pid file!" 232 | else 233 | res["msg"] = "No capture in progress" 234 | end 235 | return res, active, pid 236 | end 237 | 238 | function capture_cleanup() 239 | -- Careless file removal 240 | os.remove(pid_file) 241 | os.remove(log_file) 242 | os.remove(out_file) 243 | local f = io.open(sleep_file, "r") 244 | if f ~= nil then 245 | pid = f:read() 246 | f:close() 247 | -- Kill sleep process if still alive 248 | if tonumber(pid) ~= nil or not luci.sys.process.signal(pid, 0) then 249 | luci.sys.process.signal(pid, 9) 250 | end 251 | end 252 | -- Careless file removal 253 | os.remove(sleep_file) 254 | end 255 | 256 | function list_entries(cap_name) 257 | local fs = require "nixio.fs" 258 | local entries = {} 259 | local name 260 | local size 261 | local mtime 262 | local filter 263 | local glob_str 264 | if cap_name == nil then 265 | glob_str = tcpdump_cap_folder .. "*.pcap" 266 | else 267 | glob_str = tcpdump_cap_folder .. cap_name .. ".pcap" 268 | end 269 | for file in fs.glob(glob_str) do 270 | name = string.sub(fs.basename(file), 1, -6) 271 | size = fs.stat(file, "size") 272 | mtime = fs.stat(file, "ctime") 273 | -- Figure out if there's an associated filter 274 | if fs.access(tcpdump_filter_folder .. name .. ".filter") then 275 | filter = true 276 | else 277 | filter = false 278 | end 279 | table.insert(entries, 280 | {name = name, size = size, mtime = mtime, filter = filter}) 281 | end 282 | return entries 283 | end 284 | 285 | function list(cap_name) 286 | res = {} 287 | res["entries"] = list_entries(cap_name) 288 | res["update"] = (cap_name ~= nil) 289 | return res 290 | end 291 | 292 | function update(cap_name) 293 | local res = {} 294 | local cmd = {} 295 | cmd["ok"] = true 296 | res["cmd"] = cmd 297 | res["capture"] = capture() 298 | res["list"] = list(cap_name) 299 | -- Build response 300 | luci.http.prepare_content("application/json") 301 | luci.http.write_json(res) 302 | end 303 | 304 | function pump_file(file, mime_str) 305 | local fh = io.open(file) 306 | local reader = luci.ltn12.source.file(fh) 307 | luci.http.header("Content-Disposition", "attachment; filename=\"" .. 308 | nixio.fs.basename(file) .. "\"") 309 | if mime_str ~= nil then 310 | luci.http.prepare_content(mime_str) 311 | else 312 | luci.http.prepare_content("application/octet-stream") 313 | end 314 | luci.ltn12.pump.all(reader, luci.http.write) 315 | fh:close() 316 | end 317 | 318 | function capture_get(file_type, cap_name) 319 | if file_type == "all" then 320 | local system = require "luci.controller.admin.system" 321 | local tar_captures_cmd = "tar -c " .. tcpdump_cap_folder .. 322 | "*.pcap 2>/dev/null" 323 | local reader = system.ltn12_popen(tar_captures_cmd) 324 | luci.http.header('Content-Disposition', 325 | 'attachment; filename="captures-%s.tar"' % 326 | {os.date("%Y-%m-%d_%H.%M.%S")}) 327 | luci.http.prepare_content("application/x-tar") 328 | luci.ltn12.pump.all(reader, luci.http.write) 329 | elseif file_type == "pcap" then 330 | local file = tcpdump_cap_folder .. cap_name .. '.pcap' 331 | pump_file(file) 332 | elseif file_type == "filter" then 333 | local file = tcpdump_filter_folder .. cap_name .. '.filter' 334 | pump_file(file, "text/plain") 335 | else 336 | -- TODO 337 | end 338 | end 339 | 340 | function capture_remove(cap_name) 341 | if cap_name == 'all' then 342 | local fs = require "nixio.fs" 343 | for file in fs.glob(tcpdump_cap_folder .. "*.pcap") do 344 | os.remove(file) 345 | end 346 | for file in fs.glob(tcpdump_filter_folder .. "*.filter") do 347 | os.remove(file) 348 | end 349 | else 350 | -- Remove both, capture and filter file 351 | os.remove(tcpdump_cap_folder .. cap_name .. ".pcap") 352 | os.remove(tcpdump_filter_folder .. cap_name .. ".filter") 353 | end 354 | -- Return current status and list 355 | update() 356 | end 357 | -------------------------------------------------------------------------------- /luasrc/view/tcpdump.htm: -------------------------------------------------------------------------------- 1 | <%# 2 | LuCI - Lua Configuration Interface 3 | 4 | Copyright (C) 2013-2014, Diego Manas 5 | 6 | Initial layout based on cshark project: https://github.com/cloudshark/cshark 7 | Copyright (C) 2014, QA Cafe, Inc. 8 | 9 | Copyright (C) 2019, KFERMercer 10 | 11 | Licensed under the Apache License, Version 2.0 (the "License"); 12 | you may not use this file except in compliance with the License. 13 | You may obtain a copy of the License at 14 | 15 | http://www.apache.org/licenses/LICENSE-2.0 16 | 17 | $Id$ 18 | 19 | 2019-07-12 modified by KFERMercer : 20 | format code & change tag name 21 | 22 | -%> 23 | <%+header%> 24 | 25 |
26 | <%:Start network capture%> 27 |
28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 51 | 58 | 61 | 64 | 65 |
<%:Interface%><%:seconds, packets%><%:Filter%><%:Actions%>
37 | 50 | 52 | 53 | 57 | 59 | 60 | 62 | 63 |
66 |
67 |
68 | 69 |
70 | <%:Output%> 71 | 72 | 73 |
74 | 75 |
76 | 77 |
78 | <%:Capture links%> 79 |
80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 |
<%:Capture file%><%:Modification date%><%:Capture size%><%:Actions%>
88 |
89 |
90 | 91 |
92 | 93 | 94 | 246 | <%+footer%> 247 | -------------------------------------------------------------------------------- /po/zh-cn/tcpdump.po: -------------------------------------------------------------------------------- 1 | msgid "Tcpdump" 2 | msgstr "Tcpdump 流量监控" 3 | 4 | msgid "Start network capture" 5 | msgstr "Tcpdump 流量监控" 6 | 7 | msgid "Interface" 8 | msgstr "捕获指定的接口" 9 | 10 | msgid "seconds, packets" 11 | msgstr "捕获限制" 12 | 13 | msgid "Filter" 14 | msgstr "过滤" 15 | 16 | msgid "Actions" 17 | msgstr "操作" 18 | 19 | msgid "any" 20 | msgstr "所有" 21 | 22 | msgid "timeout, bytes, seconds" 23 | msgstr "超时, 字节, 秒" 24 | 25 | msgid "seconds" 26 | msgstr "秒" 27 | 28 | msgid "packets" 29 | msgstr "数据包" 30 | 31 | msgid "Disabled" 32 | msgstr "已禁用" 33 | 34 | msgid "Output" 35 | msgstr "输出" 36 | 37 | msgid "Capture links" 38 | msgstr "捕获结果" 39 | 40 | msgid "Capture file" 41 | msgstr "文件名" 42 | 43 | msgid "Modification date" 44 | msgstr "停止时间" 45 | 46 | msgid "Capture size" 47 | msgstr "文件大小" 48 | 49 | msgid "Start capture" 50 | msgstr "开始捕获" 51 | 52 | msgid "Stop capture" 53 | msgstr "停止捕获" 54 | 55 | msgid "pcap file" 56 | msgstr ".pcap文件" 57 | 58 | msgid "filter file" 59 | msgstr ".filter文件" 60 | 61 | msgid "Remove" 62 | msgstr "删除" 63 | 64 | msgid "All files" 65 | msgstr "所有文件" 66 | 67 | msgid "Download" 68 | msgstr "下载" 69 | 70 | msgid "Interface name is null or blank." 71 | msgstr "请指定要捕获的接口." 72 | 73 | msgid "Interface does not exist or is not valid." 74 | msgstr "接口不存在或无效." 75 | 76 | msgid "Capture length parameter must be a number." 77 | msgstr "捕获长度参数必须是数字." 78 | 79 | msgid "Capture unit is null or blank." 80 | msgstr "捕获单位为空或空白." 81 | 82 | msgid "Capture unit must be Time(T) or packet(P)." 83 | msgstr "捕获单位必须是时间(T)或包(P)." 84 | 85 | msgid "Previous capture is still ongoing!" 86 | msgstr "先前的捕获未停止!" 87 | 88 | msgid "Capture in progress.." 89 | msgstr "正在捕获..." 90 | 91 | msgid "Capture has been terminated" 92 | msgstr "捕获已被终止" 93 | 94 | msgid "There was not active capture!" 95 | msgstr "捕获活动未运行!" 96 | 97 | msgid "Process seems to be dead, removing pid file!" 98 | msgstr "进程失去响应, 正在删除pid文件!" 99 | 100 | msgid "No capture in progress" 101 | msgstr "没有正在进行的捕获" 102 | 103 | msgid "Could not retrieve captures." 104 | msgstr "无法检索捕获." 105 | 106 | msgid "There are no captures available yet." 107 | msgstr "目前没有可用的捕获." 108 | --------------------------------------------------------------------------------