feat: 信令抓包tshark解析pcap
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166
public/wiregasm/wiregasm_new.js
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166
public/wiregasm/wiregasm_new.js
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/**
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* Wraps the WiregasmLib lib functionality and manages a single DissectSession
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*/
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class Wiregasm {
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constructor() {
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this.initialized = false;
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this.session = null;
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}
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/**
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* Initialize the wrapper and the Wiregasm module
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*
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* @param loader Loader function for the Emscripten module
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* @param overrides Overrides
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*/
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async init(loader, overrides = {}, beforeInit = null) {
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if (this.initialized) {
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return;
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}
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this.lib = await loader(overrides);
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this.uploadDir = this.lib.getUploadDirectory();
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this.pluginsDir = this.lib.getPluginsDirectory();
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if (beforeInit !== null) {
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await beforeInit(this.lib);
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}
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this.lib.init();
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this.initialized = true;
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}
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list_modules() {
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return this.lib.listModules();
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}
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list_prefs(module) {
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return this.lib.listPreferences(module);
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}
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apply_prefs() {
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this.lib.applyPreferences();
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}
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set_pref(module, key, value) {
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const ret = this.lib.setPref(module, key, value);
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if (ret.code != PrefSetResult.PREFS_SET_OK) {
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const message =
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ret.error != '' ? ret.error : preferenceSetCodeToError(ret.code);
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throw new Error(
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`Failed to set preference (${module}.${key}): ${message}`
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);
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}
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}
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get_pref(module, key) {
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const response = this.lib.getPref(module, key);
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if (response.code != 0) {
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throw new Error(`Failed to get preference (${module}.${key})`);
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}
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return response.data;
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}
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/**
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* Check the validity of a filter expression.
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*
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* @param filter A display filter expression
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*/
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test_filter(filter) {
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return this.lib.checkFilter(filter);
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}
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complete_filter(filter) {
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const out = this.lib.completeFilter(filter);
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return {
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err: out.err,
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fields: vectorToArray(out.fields),
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};
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}
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reload_lua_plugins() {
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this.lib.reloadLuaPlugins();
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}
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add_plugin(name, data, opts = {}) {
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const path = this.pluginsDir + '/' + name;
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this.lib.FS.writeFile(path, data, opts);
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}
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/**
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* Load a packet trace file for analysis.
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*
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* @returns Response containing the status and summary
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*/
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load(name, data, opts = {}) {
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if (this.session != null) {
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this.session.delete();
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}
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const path = this.uploadDir + '/' + name;
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this.lib.FS.writeFile(path, data, opts);
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this.session = new this.lib.DissectSession(path);
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return this.session.load();
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}
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/**
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* Get Packet List information for a range of packets.
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*
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* @param filter Output those frames that pass this filter expression
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* @param skip Skip N frames
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* @param limit Limit the output to N frames
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*/
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frames(filter, skip = 0, limit = 0) {
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return this.session.getFrames(filter, skip, limit);
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}
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/**
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* Get full information about a frame including the protocol tree.
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*
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* @param number Frame number
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*/
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frame(num) {
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return this.session.getFrame(num);
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}
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follow(follow, filter) {
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return this.session.follow(follow, filter);
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}
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destroy() {
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if (this.initialized) {
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if (this.session !== null) {
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this.session.delete();
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this.session = null;
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}
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this.lib.destroy();
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this.initialized = false;
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}
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}
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/**
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* Returns the column headers
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*/
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columns() {
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const vec = this.lib.getColumns();
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// convert it from a vector to array
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return vectorToArray(vec);
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}
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}
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/**
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* Converts a Vector to a JS array
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*
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* @param vec Vector
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* @returns JS array of the Vector contents
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*/
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function vectorToArray(vec) {
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return new Array(vec.size()).fill(0).map((_, id) => vec.get(id));
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}
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function preferenceSetCodeToError(code) {
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switch (code) {
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case PrefSetResult.PREFS_SET_SYNTAX_ERR:
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return 'Syntax error in string';
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case PrefSetResult.PREFS_SET_NO_SUCH_PREF:
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return 'No such preference';
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case PrefSetResult.PREFS_SET_OBSOLETE:
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return 'Preference used to exist but no longer does';
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default:
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return 'Unknown error';
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}
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}
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if (typeof exports === 'object' && typeof module === 'object') {
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module.exports = Wiregasm;
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module.exports = vectorToArray;
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} else if (typeof define === 'function' && define['amd']) {
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define([], function () {
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return Wiregasm;
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});
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define([], function () {
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return vectorToArray;
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});
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} else if (typeof exports === 'object') {
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exports['loadWiregasm'] = Wiregasm;
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exports['vectorToArray'] = vectorToArray;
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}
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