How to change SVN password using PHP

When using SVN for code management, you often need to change the password to ensure security. This article will introduce how to use PHP to change the password of SVN.

1. Determine the SVN user list

To change the SVN password, you first need to know which users have registered SVN accounts. We can use the following code to list the user list:

<?php
   $users_file = "/svn/repos/path/to/passwd";
   $users = file($users_file);
   foreach ($users as $user) {
      $user = preg_split(&#39;/:/&#39;,$user);
      echo $user[0].&#39; &#39;;
   }
?>

where $users_file is the path to the file that saves the SVN user list. Through this code, all registered user accounts can be output.

2. Change SVN Password

Once we know which users have registered SVN accounts, we can use the following code to change their passwords:

<?php
   $user_to_change = &#39;user1&#39;; // 需要修改密码的用户名
   $new_password = &#39;newpassword&#39;; // 新密码
   
   $svn_path = &#39;/svn/repos/path/to&#39;;
   $svn_cmd = "sudo /usr/bin/svnadmin passwd ".$user_to_change.&#39; &#39;.$new_password." ".$svn_path;
   
   exec($svn_cmd, $output, $return_var);
   
   if ($return_var == 0) {
      echo "密码修改成功！";
   } else {
      echo "密码修改失败！";
   }
?>

Among them, $user_to_change and $new_password are the user whose password needs to be changed and the new password respectively. $svn_path is the absolute path to SVN repositories. $svn_cmd is the string used to execute the svnadmin passwd command.

3. Verify the modified password

In order to ensure that the password has been successfully changed, we need to try to use the new password to verify whether we can log in to SVN. We can verify it with the following code:

<?php
   $svn_path = &#39;/svn/repos/path/to&#39;;
   $svn_cmd = "sudo /usr/bin/svn co --username user1 --password newpassword ".$svn_path;
   
   exec($svn_cmd, $output, $return_var);
   
   if ($return_var == 0) {
      echo "密码验证成功！";
   } else {
      echo "密码验证失败！";
   }
?>

where $svn_cmd is the command used to check out the code from the SVN server. If the new password can be successfully verified, it means that the SVN password has been successfully changed.

Conclusion

Although it is a bit complicated to use PHP to change the password of SVN, it can help us better manage our code and files. Using the above method, we can use SVN for collaborative development more safely.

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