From fe94c0057bd0c44317f22afeb0fe8432e0b18c64 Mon Sep 17 00:00:00 2001 From: Jeff Carr Date: Sat, 9 Mar 2024 17:46:36 -0600 Subject: [PATCH] remove some of the wierder code Signed-off-by: Jeff Carr --- LICENSE | 695 ++++++++++++++++++++++++++++++++++++++++++++-- LICENSE.md | 8 - example1/Makefile | 11 - example1/main.go | 43 --- example2/Makefile | 3 - example2/main.go | 11 - linux.go | 27 -- nohup.out | 0 run.go | 169 +---------- shell.go | 56 ---- ssh.go | 157 ----------- structs.go | 8 +- 12 files changed, 678 insertions(+), 510 deletions(-) delete mode 100644 LICENSE.md delete mode 100644 example1/Makefile delete mode 100644 example1/main.go delete mode 100644 example2/Makefile delete mode 100644 example2/main.go delete mode 100644 linux.go delete mode 100644 nohup.out delete mode 100644 ssh.go diff --git a/LICENSE b/LICENSE index 6a66aea..f288702 100644 --- a/LICENSE +++ b/LICENSE @@ -1,27 +1,674 @@ -Copyright (c) 2009 The Go Authors. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + 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. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/LICENSE.md b/LICENSE.md deleted file mode 100644 index 63f8dce..0000000 --- a/LICENSE.md +++ /dev/null @@ -1,8 +0,0 @@ -GNU Lesser General Public License (LGPL) - -I don't want it to be possible to make closed source forks of this. -If you need to use this in a proprietary GO application, then -compile this as a plugin. The BSD license is bad for core GO libraries. - -(GO now supports plugins as of version 1.8) -https://medium.com/@henvic/opensource-and-go-what-license-f6b36c201854 diff --git a/example1/Makefile b/example1/Makefile deleted file mode 100644 index 443064f..0000000 --- a/example1/Makefile +++ /dev/null @@ -1,11 +0,0 @@ -all: - # go build - GO111MODULE="off" go run main.go - -goimports: - goimports -w *.go - -redomod: - rm -f go.* - GO111MODULE= go mod init - GO111MODULE= go mod tidy diff --git a/example1/main.go b/example1/main.go deleted file mode 100644 index f9998a5..0000000 --- a/example1/main.go +++ /dev/null @@ -1,43 +0,0 @@ -package main - -/* -import "log" -import "reflect" -*/ - -import "os" - -// import "github.com/davecgh/go-spew/spew" - -import "go.wit.com/lib/gui/shell" - -func main() { - shell.Run("ls /tmp") - - shell.Run("ping -c 3 localhost") - - // slow down the polling to every 2 seconds - shell.SetDelayInMsec(2000) - - shell.Run("ping -c 4 localhost") - - // capture ping output into a file - fout, _ := os.Create("/tmp/example1.ping.stdout") - ferr, _ := os.Create("/tmp/example1.ping.stderr") - shell.SetStdout(fout) - shell.SetStderr(ferr) - - shell.Run("ping -c 5 localhost") - - // turn out process exit debugging - shell.SpewOn() - - fout, _ = os.Create("/tmp/example1.fail.stdout") - ferr, _ = os.Create("/tmp/example1.fail.stderr") - shell.SetStdout(fout) - shell.SetStderr(ferr) - - // TODO: this might not be working - // check error handling - shell.Run("ls /tmpthisisnothere") -} diff --git a/example2/Makefile b/example2/Makefile deleted file mode 100644 index 7b4c2b6..0000000 --- a/example2/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -all: - # go build - GO111MODULE="off" go run main.go diff --git a/example2/main.go b/example2/main.go deleted file mode 100644 index 2593a2b..0000000 --- a/example2/main.go +++ /dev/null @@ -1,11 +0,0 @@ -package main - -import "log" -// import "fmt" -import "go.wit.com/lib/gui/shell" - -func main() { - err := shell.Run("cat /etc/issue") - log.Println("cat /etc/issue returned", err) - // fmt.Print(output) -} diff --git a/linux.go b/linux.go deleted file mode 100644 index ee24420..0000000 --- a/linux.go +++ /dev/null @@ -1,27 +0,0 @@ -//go:build linux && go1.7 -// +build linux,go1.7 - -// put stuff in here that you only want compiled under linux - -package shell - -import ( - "log" - "os" - "os/signal" - "syscall" - - "github.com/wercker/journalhook" -) - -var sigChan chan os.Signal - -func handleSignal(err interface{}, ret int) { - log.Println("handleSignal() only should be compiled on linux") - sigChan = make(chan os.Signal, 3) - signal.Notify(sigChan, syscall.SIGUSR1) -} - -func UseJournalctl() { - journalhook.Enable() -} diff --git a/nohup.out b/nohup.out deleted file mode 100644 index e69de29..0000000 diff --git a/run.go b/run.go index ed43101..2a4f529 100644 --- a/run.go +++ b/run.go @@ -1,18 +1,11 @@ package shell import ( - "bufio" - "bytes" "errors" - "fmt" - "io" "os" "os/exec" "strings" "syscall" - "time" - - "github.com/svent/go-nbreader" "go.wit.com/log" ) @@ -60,11 +53,11 @@ func Run(args []string) bool { var ErrorArgvEmpty error = errors.New("command was empty") type RunResult struct { - ok bool - argv []string - path string + ok bool + argv []string + path string output []byte - err error + err error outerr error } @@ -113,160 +106,6 @@ func RunPath(path string, args []string) *RunResult { return r } -func (cmd *OldShell) Run(cmdline string) string { - cmd.InitProcess(cmdline) - if cmd.Error != nil { - return "" - } - cmd.Exec(cmdline) - return Chomp(cmd.Buffer) -} - -func (cmd *OldShell) InitProcess(cmdline string) { - log.Log(RUN, "shell.InitProcess() START "+cmdline) - - cmd.Cmdline = Chomp(cmdline) // this is like 'chomp' in perl - cmdArgs := strings.Fields(cmd.Cmdline) - if len(cmdArgs) == 0 { - cmd.Error = fmt.Errorf("cmdline == ''") - cmd.Done = true - return - } - if cmdArgs[0] == "cd" { - if len(cmdArgs) > 1 { - log.Log(RUN, "os.Chdir()", cmd) - os.Chdir(cmdArgs[1]) - } - handleError(nil, 0) - cmd.Done = true - return - } - - cmd.Process = exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...) -} - -func (cmd *OldShell) FileCreate(out string) { - var newfile File - - var iof io.ReadCloser - if out == "STDOUT" { - iof, _ = cmd.Process.StdoutPipe() - } else { - iof, _ = cmd.Process.StderrPipe() - } - - newfile.Fio = iof - newfile.Fbufio = bufio.NewReader(iof) - newfile.Fnbreader = nbreader.NewNBReader(newfile.Fbufio, 1024) - - if out == "STDOUT" { - cmd.STDOUT = &newfile - } else { - cmd.STDERR = &newfile - } -} - -// NOTE: this might cause problems: -// always remove the newlines at the end ? -func (cmd *OldShell) Exec(cmdline string) { - log.Log(RUN, "shell.Run() START "+cmdline) - - cmd.InitProcess(cmdline) - if cmd.Error != nil { - return - } - - cmd.FileCreate("STDOUT") - cmd.FileCreate("STDERR") - - cmd.Process.Start() - - // TODO; 'goroutine' both of these - // and make your own wait that will make sure - // the process is then done and run process.Wait() - go cmd.Capture(cmd.STDERR) - cmd.Capture(cmd.STDOUT) - - // wait until the process exists - // https://golang.org/pkg/os/exec/#Cmd.Wait - // What should happen here, before calling Wait() - // is checks to make sure the READERS() on STDOUT and STDERR are done - err := cmd.Process.Wait() - - // time.Sleep(2 * time.Second) // putting this here doesn't help STDOUT flush() - - if err != nil { - cmd.Fail = true - cmd.Error = err - log.Log(RUN, "process.Wait() END err =", err.Error()) - } else { - log.Log(RUN, "process.Wait() END") - } - return -} - -// nonblocking read until file errors -func (cmd *OldShell) Capture(f *File) { - log.Log(RUN, "nbrREADER() START") - - if cmd.Buffer == nil { - cmd.Buffer = new(bytes.Buffer) - } - if cmd.Buffer == nil { - f.Dead = false - cmd.Error = fmt.Errorf("could not make buffer") - log.Error(cmd.Error, "f.Buffer == nil") - log.Error(cmd.Error, "SHOULD DIE HERE") - cmd.Done = true - } - - f.Dead = false - - // loop that keeps trying to read from f - for f.Dead == false { - time.Sleep(time.Duration(msecDelay) * time.Millisecond) // only check the buffer 500 times a second - - // set to false so it keeps retrying reads - f.Empty = false - - // tight loop that reads 1024 bytes at a time until buffer is empty - // 1024 is set in f.BufferSize - for f.Empty == false { - f.Empty = cmd.ReadToBuffer(f) - } - } -} - -// returns true if filehandle buffer is empty -func (cmd *OldShell) ReadToBuffer(f *File) bool { - log.Log(RUN, "ReadToBuffer() START") - nbr := f.Fnbreader - oneByte := make([]byte, 1024) - if nbr == nil { - // log.Debugln("ReadToBuffer() ERROR nbr is nil") - f.Dead = true - return true - } - count, err := nbr.Read(oneByte) - f.TotalCount += count - - if err != nil { - // log.Debugln("ReadToBuffer() file has closed with", err) - // log.Debugln("ReadToBuffer() count = ", count, "err = ", err) - f.Dead = true - return true - } - if count == 0 { - // log.Debugln("ReadToBuffer() START count == 0 return true") - return true - } - // log.Debugln("ReadToBuffer() count = ", count) - // tmp := Chomp(oneByte) - // log.Debugln("ReadToBuffer() tmp = ", tmp) - io.WriteString(cmd.Buffer, strings.Trim(string(oneByte), "\x00")) - return false -} - // send the path and the command func RunCmd(workingpath string, parts []string) (error, bool, string) { if len(parts) == 0 { diff --git a/shell.go b/shell.go index 21982af..4f0abf5 100644 --- a/shell.go +++ b/shell.go @@ -1,14 +1,12 @@ package shell import ( - "bufio" "io/ioutil" "os" "os/exec" "strings" "time" - "github.com/svent/go-nbreader" "go.wit.com/log" ) @@ -85,21 +83,6 @@ func RM(filename string) { os.Remove(Path(filename)) } -/* - err := process.Wait() - - if err != nil { - if (spewOn) { - // this panics: spew.Dump(err.(*exec.ExitError)) - spew.Dump(process.ProcessState) - } - // stuff := err.(*exec.ExitError) - log.Log(INFO, "ERROR ", err.Error()) - log.Log(INFO, "END ", cmdline) - handleError(err, -1) - return "" -*/ - func Daemon(cmdline string, timeout time.Duration) int { for { RunString(cmdline) @@ -107,45 +90,6 @@ func Daemon(cmdline string, timeout time.Duration) int { } } -// pass in two file handles (1 read, 1 write) -func nonBlockingReader(buffReader *bufio.Reader, writeFileHandle *os.File, stdout *bufio.Writer) { - // newreader := bufio.NewReader(readFileHandle) - - // create a nonblocking GO reader - nbr := nbreader.NewNBReader(buffReader, 1024) - - for { - // defer buffReader.Close() - // defer writeFileHandle.Flush() - defer writeFileHandle.Close() - totalCount := 0 - for { - oneByte := make([]byte, 1024) - count, err := nbr.Read(oneByte) - if err != nil { - log.Log(INFO, "count, err =", count, err) - handleError(err, -1) - return - } - totalCount += count - if count == 0 { - time.Sleep(time.Duration(msecDelay) * time.Millisecond) // without this delay this will peg the CPU - if totalCount != 0 { - log.Log(INFO, "STDERR: totalCount = ", totalCount) - totalCount = 0 - } - } else { - log.Log(INFO, "STDERR: count = ", count) - writeFileHandle.Write(oneByte[0:count]) - if quiet == false { - stdout.Write(oneByte[0:count]) - stdout.Flush() - } - } - } - } -} - // run something and never return from it // TODO: pass STDOUT, STDERR, STDIN correctly // TODO: figure out how to nohup the process and exit diff --git a/ssh.go b/ssh.go deleted file mode 100644 index 67b5c22..0000000 --- a/ssh.go +++ /dev/null @@ -1,157 +0,0 @@ -package shell - -import ( - "fmt" - "io/ioutil" - "time" - - "github.com/tmc/scp" - "go.wit.com/log" - "golang.org/x/crypto/ssh" -) - -var sshHostname string -var sshPort int -var sshUsername string -var sshPassword string -var sshKeyfile string - -func SSHclientSet(hostname string, port int, username string, pass string, keyfile string) { - sshHostname = hostname - sshPort = port - sshUsername = username - sshPassword = pass - sshKeyfile = keyfile -} - -func SSHclientSCP(localfile string, remotefile string) { - log.Log(SSH, "shell.SSHclientSCP() START") - log.Log(SSH, "shell.SSHclientSCP() \tlocalfile =", localfile) - log.Log(SSH, "shell.SSHclientSCP() \tremotefile =", remotefile) - sess := mySsh(sshHostname, sshPort, sshUsername, sshPassword, sshKeyfile) - err := scp.CopyPath(localfile, remotefile, sess) - sess.Close() - log.Log(SSH, "shell.SSHclientSCP() \tscp.CopyPath() err =", err) - log.Log(SSH, "shell.SSHclientSCP() END") -} - -func SSHclientRun(cmd string) { - log.Log(SSH, "shell.SSHclientRun() START cmd =", cmd) - sess := mySsh(sshHostname, sshPort, sshUsername, sshPassword, sshKeyfile) - err := sess.Run(cmd) - sess.Close() - log.Log(SSH, "shell.SSHclientRun() END err =", err) -} - -func mySsh(hostname string, port int, username string, pass string, keyfile string) *ssh.Session { - // get host public key - // hostKey := getHostKey(host) - // log.Log(SSH, "hostkey =", hostKey) - - publicKey, err := PublicKeyFile(keyfile) - if err != nil { - log.Log(SSH, "PublicKeyFile() error =", err) - } - - // ssh client config - config := ssh.ClientConfig{ - User: username, - Auth: []ssh.AuthMethod{ - ssh.Password(pass), - publicKey, - }, - // allow any host key to be used (non-prod) - HostKeyCallback: ssh.InsecureIgnoreHostKey(), - - // verify host public key - // HostKeyCallback: ssh.FixedHostKey(hostKey), - // optional host key algo list - HostKeyAlgorithms: []string{ - ssh.KeyAlgoRSA, - ssh.KeyAlgoDSA, - ssh.KeyAlgoECDSA256, - ssh.KeyAlgoECDSA384, - ssh.KeyAlgoECDSA521, - ssh.KeyAlgoED25519, - }, - // optional tcp connect timeout - Timeout: 5 * time.Second, - } - - sport := fmt.Sprintf("%d", port) - // connect - client, err := ssh.Dial("tcp", hostname+":"+sport, &config) - if err != nil { - log.Error(err) - } - // defer client.Close() - - // start session - sess, err := client.NewSession() - if err != nil { - log.Error(err) - } - // defer sess.Close() - - return sess -} - -func Scp(sess *ssh.Session, localfile string, remotefile string) { - err := scp.CopyPath(localfile, remotefile, sess) - log.Log(SSH, "scp.CopyPath() err =", err) -} - -func PublicKeyFile(file string) (ssh.AuthMethod, error) { - buffer, err := ioutil.ReadFile(file) - log.Log(SSH, "buffer =", string(buffer)) - if err != nil { - return nil, err - } - - key, err := ssh.ParsePrivateKey(buffer) - if err != nil { - return nil, err - } - return ssh.PublicKeys(key), nil -} - -// THIS doesn't work -/* -func getHostKey(host string) ssh.PublicKey { - // parse OpenSSH known_hosts file - // ssh or use ssh-keyscan to get initial key - file, err := os.Open(filepath.Join(os.Getenv("HOME"), ".ssh", "known_hosts")) - if err != nil { - log.Fatal(err) - } - defer file.Close() - - scanner := bufio.NewScanner(file) - var hostKey ssh.PublicKey - for scanner.Scan() { - fields := strings.Split(scanner.Text(), " ") - if len(fields) != 3 { - continue - } - if strings.Contains(fields[0], host) { - var err error - hostKey, _, _, _, err = ssh.ParseAuthorizedKey(scanner.Bytes()) - if err != nil { - log.Fatalf("error parsing %q: %v", fields[2], err) - } - break - } - } - - // 9enFJdMhb8eHN/6qfHSU/jww2Mo=|pcsWQCvAyve9QXBhjL+w/LhkcHU= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMQx8BJXxD+vk3wyjy7Irzw4FA6xxJvqUP7Hb+Z+ygpOuidYj9G8x6gHEXFUnABn5YirePrWh5tNsk4Rqs48VwU= - hostKey, _, _, _, err = ssh.ParseAuthorizedKey([]byte("9enFJdMhb8eHN/6qfHSU/jww2Mo=|pcsWQCvAyve9QXBhjL+w/LhkcHU= ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMQx8BJXxD+vk3wyjy7Irzw4FA6xxJvqUP7Hb+Z+ygpOuidYj9G8x6gHEXFUnABn5YirePrWh5tNsk4Rqs48VwU=")) - log.Log(SSH, "hostkey err =", err) - log.Log(SSH, "hostkey =", hostKey) - if hostKey == nil { - log.Log(SSH, "no hostkey found err =", err) - log.Fatalf("no hostkey found for %s", host) - } - - return hostKey -} -*/ diff --git a/structs.go b/structs.go index bf31186..701d15b 100644 --- a/structs.go +++ b/structs.go @@ -5,8 +5,6 @@ import ( "bytes" "io" "os/exec" - - "github.com/svent/go-nbreader" ) var FileMap map[string]*File @@ -22,9 +20,9 @@ type File struct { Empty bool Dead bool - Fio io.ReadCloser // := process.StdoutPipe() - Fbufio *bufio.Reader // := bufio.NewReader(pOUT) - Fnbreader *nbreader.NBReader // := nbreader.NewNBReader(readOUT, 1024) + Fio io.ReadCloser // := process.StdoutPipe() + Fbufio *bufio.Reader // := bufio.NewReader(pOUT) + // Fnbreader *nbreader.NBReader // := nbreader.NewNBReader(readOUT, 1024) } // early code playground