How To Execute SSH Commands Via PHP

Question

I am looking to SSH out via PHP  What is the best most secure way to go about this  I know I can do   shell exec  SSH user host com mkdir  testing      Anything better  That feels so  naughty

User · Answer

Do you have the SSH2 extension available?

Docs: http://www.php.net/manual/en/function.ssh2-exec.php

$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');

$stream = ssh2_exec($connection, '/usr/local/bin/php -i');

User · Answer

Update 2018   works    Method1   Download phpseclib v1 and use this code    lt  php set include path   DIR       phpseclib1 0 11    include  Net SSH2 php      key   MyPassword            if using PrivateKey        include  Crypt RSA php       key   new Crypt RSA       key- gt loadKey file get contents  private-key ppk            ssh   new Net SSH2  www example com   22        Domain or IP if    ssh- gt login  your username    key    exit  Login Failed     echo  ssh- gt exec  pwd      gt    or Method2   Download newest phpseclib v2  requires composer install at first     lt  php  set include path  path   DIR       phpseclib-master phpseclib    include   path      vendor autoload php      loader   new  Composer Autoload ClassLoader     use phpseclib Net SSH2    key   MyPassword            if using PrivateKey        use phpseclib Crypt RSA     key   new RSA       key- gt load file get contents  private-key ppk            ssh   new SSH2  www example com   22        Domain or IP if    ssh- gt login  your username    key     exit  Login Failed      echo  ssh- gt exec  pwd      gt    p s  if you get  Connection timed out  then it s probably the issue of HOST FIREWALL  local or remote  or like that  not a fault of script

User · Answer

For those using the Symfony framework  the phpseclib can also be used to connect via SSH  It can be installed using composer   composer require phpseclib phpseclib   Next  simply use it as follows   use phpseclib Net SSH2      Within a controller for example   ssh   new SSH2  hostname or ip    if    ssh- gt login  username    password             Login failed  do something     return value    ssh- gt exec  command

User · Answer

Use the ssh2 functions  Anything you d do via an exec   call can be done directly using these functions  saving you a lot of connections and shell invocations

User · Answer

I would use phpseclib  a pure PHP SSH implementation   An example    lt  php include  Net SSH2 php      ssh   new Net SSH2  www domain tld    if    ssh- gt login  username    password          exit  Login Failed       echo  ssh- gt exec  pwd    echo  ssh- gt exec  ls -la      gt

User · Answer

I ve had a hard time with ssh2 in php mostly because the output stream sometimes works and sometimes it doesn t  I m just gonna paste my lib here which works for me very well  If there are small inconsistencies in code it s because I have it plugged in a framework but you should be fine porting it    lt  php  class Components Ssh        private  host       private  user       private  pass       private  port       private  conn   false       private  error       private  stream       private  stream timeout   100       private  log       private  lastLog       public function   construct    host   user   pass   port   serverLog              this- gt host    host           this- gt user    user           this- gt pass    pass           this- gt port    port           this- gt sLog    serverLog           if    this- gt connect   - gt authenticate                    return true                       public function isConnected              return   boolean    this- gt conn             public function   get    name             return  this- gt  name             public function connect               this- gt logAction    Connecting to   this- gt host              if    this- gt conn   ssh2 connect    this- gt host   this- gt port                   return  this                     this- gt logAction    Connection to   this- gt host  failed             throw new Exception    Unable to connect to   this- gt host                 public function authenticate               this- gt logAction    Authenticating to   this- gt host              if   ssh2 auth password    this- gt conn   this- gt user   this- gt pass                   return  this                     this- gt logAction    Authentication to   this- gt host  failed             throw new Exception    Unable to authenticate to   this- gt host                 public function sendFile    localFile   remoteFile   permision   0644             if     is file    localFile     throw new Exception    Local file   localFile  does not exist              this- gt logAction    Sending file  localFile as  remoteFile               sftp   ssh2 sftp    this- gt conn             sftpStream    fopen    ssh2 sftp        sftp    remoteFile   w             if      sftpStream                     if 1 method failes try the other one             if      ssh2 scp send    this- gt conn   localFile   remoteFile   permision                       throw new Exception    Could not open remote file   remoteFile                               else                   return true                                    data to send    file get contents    localFile             if    fwrite    sftpStream   data to send       false                 throw new Exception    Could not send data from file   localFile                         fclose    sftpStream              this- gt logAction    Sending file  localFile as  remoteFile succeeded             return true             public function getFile    remoteFile   localFile              this- gt logAction    Receiving file  remoteFile as  localFile             if   ssh2 scp recv    this- gt conn   remoteFile   localFile                   return true                     this- gt logAction    Receiving file  remoteFile as  localFile failed             throw new Exception    Unable to get file to   remoteFile                 public function cmd    cmd   returnOutput   false              this- gt logAction    Executing command  cmd              this- gt stream   ssh2 exec    this- gt conn   cmd             if   FALSE      this- gt stream                  this- gt logAction    Unable to execute command  cmd                 throw new Exception    Unable to execute command   cmd                         this- gt logAction     cmd was executed              stream set blocking    this- gt stream  true            stream set timeout    this- gt stream   this- gt stream timeout             this- gt lastLog   stream get contents    this- gt stream              this- gt logAction     cmd output    this- gt lastLog              fclose    this- gt stream             this- gt log     this- gt lastLog     n           return    returnOutput      this- gt lastLog    this             public function shellCmd    cmds   array                 this- gt logAction    Openning ssh2 shell              this- gt shellStream   ssh2 shell    this- gt conn             sleep   1             out               while    line   fgets    this- gt shellStream                    out     line                      this- gt logAction    ssh2 shell output   out              foreach    cmds as  cmd                  out                    this- gt logAction    Writing ssh2 shell command   cmd                 fwrite    this- gt shellStream    cmd    PHP EOL                sleep   1                while    line   fgets    this- gt shellStream                        out     line                  sleep   1                               this- gt logAction    ssh2 shell command  cmd output   out                         this- gt logAction    Closing shell stream             fclose    this- gt shellStream               public function getLastOutput              return  this- gt lastLog             public function getOutput              return  this- gt log             public function disconnect               this- gt logAction    Disconnecting from   this- gt host                 if disconnect function is available call it           if   function exists    ssh2 disconnect                    ssh2 disconnect    this- gt conn                      else      if no disconnect func is available  close conn  unset var              fclose    this- gt conn                 this- gt conn   false                       return null always         return NULL             public function fileExists    path              output    this- gt cmd      -f  path    amp  amp  echo 1    echo 0   true            return   bool   trim    output

[php] How To Execute SSH Commands Via PHP

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