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Signed-off-by: cfc4n <cfc4n.cs@gmail.com>
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| //go:build !androidgki | ||
| // +build !androidgki | ||
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| // Copyright 2022 CFC4N <cfc4n.cs@gmail.com>. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package cmd | ||
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| import ( | ||
| "context" | ||
| "ecapture/pkg/util/kernel" | ||
| "ecapture/user/config" | ||
| "ecapture/user/module" | ||
| "log" | ||
| "os" | ||
| "os/signal" | ||
| "sync" | ||
| "syscall" | ||
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| "github.com/spf13/cobra" | ||
| ) | ||
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| var gc = config.NewGnutlsConfig() | ||
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| // gnutlsCmd represents the openssl command | ||
| var gnutlsCmd = &cobra.Command{ | ||
| Use: "gnutls", | ||
| Aliases: []string{"gnu"}, | ||
| Short: "capture gnutls text content without CA cert for gnutls libraries.", | ||
| Long: `use eBPF uprobe/TC to capture process event data and network data.also support pcap-NG format. | ||
| ecapture gnutls | ||
| ecapture gnutls --hex --pid=3423 | ||
| ecapture gnutls -l save.log --pid=3423 | ||
| ecapture gnutls --gnutls=/lib/x86_64-linux-gnu/libgnutls.so | ||
| `, | ||
| Run: gnuTlsCommandFunc, | ||
| } | ||
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| func init() { | ||
| //opensslCmd.PersistentFlags().StringVar(&gc.Curlpath, "wget", "", "wget file path, default: /usr/bin/wget. (Deprecated)") | ||
| gnutlsCmd.PersistentFlags().StringVar(&gc.Gnutls, "gnutls", "", "libgnutls.so file path, will automatically find it from curl default.") | ||
| rootCmd.AddCommand(gnutlsCmd) | ||
| } | ||
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| // gnuTlsCommandFunc executes the "bash" command. | ||
| func gnuTlsCommandFunc(command *cobra.Command, args []string) { | ||
| stopper := make(chan os.Signal, 1) | ||
| signal.Notify(stopper, os.Interrupt, syscall.SIGTERM) | ||
| ctx, cancelFun := context.WithCancel(context.TODO()) | ||
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| logger := log.New(os.Stdout, "tls_", log.LstdFlags) | ||
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| // save global config | ||
| gConf, err := getGlobalConf(command) | ||
| if err != nil { | ||
| logger.Fatal(err) | ||
| } | ||
| logger.SetOutput(gConf.writer) | ||
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| logger.Printf("ECAPTURE :: %s Version : %s", cliName, GitVersion) | ||
| logger.Printf("ECAPTURE :: Pid Info : %d", os.Getpid()) | ||
| var version kernel.Version | ||
| version, err = kernel.HostVersion() | ||
| logger.Printf("ECAPTURE :: Kernel Info : %s", version.String()) | ||
| modNames := []string{module.ModuleNameGnutls} | ||
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| var runMods uint8 | ||
| var runModules = make(map[string]module.IModule) | ||
| var wg sync.WaitGroup | ||
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| for _, modName := range modNames { | ||
| mod := module.GetModuleByName(modName) | ||
| if mod == nil { | ||
| logger.Printf("ECAPTURE :: \tcant found module: %s", modName) | ||
| break | ||
| } | ||
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| var conf config.IConfig | ||
| conf = gc | ||
| if conf == nil { | ||
| logger.Printf("ECAPTURE :: \tcant found module %s config info.", mod.Name()) | ||
| break | ||
| } | ||
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| conf.SetPid(gConf.Pid) | ||
| conf.SetUid(gConf.Uid) | ||
| conf.SetDebug(gConf.Debug) | ||
| conf.SetHex(gConf.IsHex) | ||
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| err = conf.Check() | ||
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| if err != nil { | ||
| logger.Printf("%s\tmodule initialization failed. [skip it]. error:%+v", mod.Name(), err) | ||
| continue | ||
| } | ||
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| logger.Printf("%s\tmodule initialization", mod.Name()) | ||
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| //初始化 | ||
| err = mod.Init(ctx, logger, conf) | ||
| if err != nil { | ||
| logger.Printf("%s\tmodule initialization failed, [skip it]. error:%+v", mod.Name(), err) | ||
| continue | ||
| } | ||
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| err = mod.Run() | ||
| if err != nil { | ||
| logger.Printf("%s\tmodule run failed, [skip it]. error:%+v", mod.Name(), err) | ||
| continue | ||
| } | ||
| runModules[mod.Name()] = mod | ||
| logger.Printf("%s\tmodule started successfully.", mod.Name()) | ||
| wg.Add(1) | ||
| runMods++ | ||
| } | ||
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| // needs runmods > 0 | ||
| if runMods > 0 { | ||
| logger.Printf("ECAPTURE :: \tstart %d modules", runMods) | ||
| <-stopper | ||
| } else { | ||
| logger.Println("ECAPTURE :: \tNo runnable modules, Exit(1)") | ||
| os.Exit(1) | ||
| } | ||
| cancelFun() | ||
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| // clean up | ||
| for _, mod := range runModules { | ||
| err = mod.Close() | ||
| wg.Done() | ||
| if err != nil { | ||
| logger.Fatalf("%s\tmodule close failed. error:%+v", mod.Name(), err) | ||
| } | ||
| } | ||
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| wg.Wait() | ||
| os.Exit(0) | ||
| } |
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