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PHP is used to realize telnet connection, transfer commands, obtain return values ​​and other functions!

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Release： 2016-07-25 08:43:11
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php来实现telnet的连接、传递命令、获取返回值等功能！

  1. error_reporting(-1);
  3. class Telnet {
  4. var $sock = NULL;
  6. function telnet($host,$port) {
  7. $this->sock = fsockopen($host,$port);
  8. socket_set_timeout($this->sock,2,0);
  9. }
  11. function close() {
  12. if ($this->sock) fclose($this->sock);
  13. $this->sock = NULL;
  14. }
  16. function write($buffer) {
  17. $buffer = str_replace(chr(255),chr(255).chr(255),$buffer);
  18. fwrite($this->sock,$buffer);
  19. }
  21. function getc() {
  22. return fgetc($this->sock);
  23. }
  25. function read_till($what) {
  26. $buf = '';
  27. while (1) {
  28. $IAC = chr(255);
  30. $DONT = chr(254);
  31. $DO = chr(253);
  33. $WONT = chr(252);
  34. $WILL = chr(251);
  36. $theNULL = chr(0);
  38. $c = $this->getc();
  40. if ($c === false) return $buf;
  41. if ($c == $theNULL) {
  42. continue;
  43. }
  45. if ($c == "1") {
  46. continue;
  47. }
  49. if ($c != $IAC) {
  50. $buf .= $c;
  52. if ($what == (substr($buf,strlen($buf)-strlen($what)))) {
  53. return $buf;
  54. }
  55. else {
  56. continue;
  57. }
  58. }
  60. $c = $this->getc();
  62. if ($c == $IAC) {
  63. $buf .= $c;
  64. }
  65. else if (($c == $DO) || ($c == $DONT)) {
  66. $opt = $this->getc();
  67. // echo "we wont ".ord($opt)."n";
  68. fwrite($this->sock,$IAC.$WONT.$opt);
  69. }
  70. elseif (($c == $WILL) || ($c == $WONT)) {
  71. $opt = $this->getc();
  72. // echo "we dont ".ord($opt)."n";
  73. fwrite($this->sock,$IAC.$DONT.$opt);
  74. }
  75. else {
  76. // echo "where are we? c=".ord($c)."n";
  77. }
  78. }
  79. }
  80. }
  82. /*
  83. $telnet = new telnet("192.168.0.1",23);
  84. echo $telnet->read_till("login: ");
  85. $telnet->write("kongxxrn");
  86. echo $telnet->read_till("password: ");
  87. $telnet->write("KONGXXrn");
  88. echo $telnet->read_till(":> ");
  89. $telnet->write("lsrn");
  90. echo $telnet->read_till(":> ");
  91. echo $telnet->close();
  93. */
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等功能, 来实现, 返回值


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php来实现telnet的连接、传递命令、获取返回值等功能！
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