将ChangePasswd.cgi和ChangePasswd.ini放在Apache的cgi-bin目录下，我是yum安装的apache所以路径为/var/www/cgi-bin
[root@svn ~]# cd /var/www/cgi-bin/ [root@svn cgi-bin]# chown -R apache:apache ./* [root@svn cgi-bin]# ll -h 总用量 16K -rwxr-xr-x 1 apache apache 5.8K 6月 19 2015 ChangePasswd.cgi -rwxr-xr-x 1 apache apache 602 6月 19 2015 ChangePasswd.ini -rw-r--r-- 1 apache apache 298 6月 19 11:40 ChangePasswd.log
ChangePasswd.cgi 文件：
#!/usr/bin/perl -w
use strict;
use CGI;
my $time = localtime;
my $remote_id = $ENV{REMOTE_HOST} || $ENV{REMOTE_ADDR};
my $admin_email = $ENV{SERVER_ADMIN};
my $cgi = new CGI;
my $pwd_not_alldiginal = "密码不能全为数字";
my $pwd_not_allchar = "密码不能全为字符";
my $user_not_exists ="该用户不存在";
my $file_not_found ="文件不存在,请联系管理员";
my $authuserfile;
my $logfile;
my $pwdminlen;
my $title;
my $description;
my $yourname;
my $oldpwd;
my $newpwd1;
my $newpwd2;
my $btn_change;
my $btn_reset;
my $changepwdok;
my $changepwdfailed;
my $oldpwderror;
my $passmustgreater;
my $twopassnotmatched;
my $entername;
my $enterpwd;
my $errorpwd;
my $back;
&IniInfo;
if ($cgi -> param())
{#8
my $User = $cgi->param('UserName');
my $UserPwd = $cgi->param('OldPwd');
my $UserNewPwd = $cgi->param('NewPwd1');
my $MatchNewPwd = $cgi->param('NewPwd2');
if (!$User)
{&Writer_Log("Enter no user name");
&otherhtml($title,$entername,$back);}
elsif (!$UserPwd )
{&Writer_Log("Enter no OldPasswd");
&otherhtml($title,$enterpwd,$back); }
elsif (length($UserNewPwd)<$pwdminlen)
{&Writer_Log("Password's length must greater than".$pwdminlen);
&otherhtml($title,$passmustgreater.$pwdminlen,$back);}
elsif ($UserNewPwd =~/^\d+$/)
{&Writer_Log("New Passwd isn't all diginal");
&otherhtml($title,$pwd_not_alldiginal,$back);}
elsif ($UserNewPwd =~/^[A-Za-z]+$/)
{&Writer_Log("New Passwd isn't all char");
&otherhtml($title,$pwd_not_allchar,$back);}
elsif ($UserNewPwd ne $MatchNewPwd)
{&Writer_Log("Two new passwords are not matched");
&otherhtml($title,$twopassnotmatched,$back);}
else
{if($authuserfile)
{#6
open UserFile, "<$authuserfile" or die "打开文件失败：$!";
while ()
{#5
my $varstr=$_;
if($varstr =~/($User)/)
{#3
my $eqpos =index($varstr, ":");
my $UserName = substr($varstr,0,$eqpos);
my $cryptpwd = substr($varstr,$eqpos + 1,13);
next if($UserName ne $User);
if(crypt($UserPwd,$cryptpwd) eq $cryptpwd)
{#a
my $rc = system("/usr/bin/htpasswd -b $authuserfile $User $UserNewPwd");
if ($rc == 0)
{#1
&Writer_Log( $User."：Change Passwd");
&otherhtml($title,$changepwdok,$back);
}#1
else
{#2
&Writer_Log( $User."：Change Passwd Failed");
&otherhtml($title,$changepwdfailed,$back);
}#2
exit;
}#a
else
{#b
&Writer_Log("Old Passwd is Incorrect ");
&otherhtml($title,$errorpwd,$back);
}#b
exit;
}#3
else
{#4
if(eof)
{ &Writer_Log($User."：no this user");
&otherhtml($title,$user_not_exists,$back);
exit;
}
else
{next;}
}#4
}#5
close UserFile;
}#6
else
{#7
&Writer_Log($authuserfile."：no found");
&otherhtml($title,$file_not_found,$back);
}#7
}
}#8
else
{&Index_Html;}
sub IniInfo{
my $inifile = "/var/www/cgi-bin/ChangePasswd.ini";
open CGI_INI_FILE, "<$inifile" or die "打开文件失败：$!";;
while ()
{
my $eqpos =index($_,'=');
my $len = length($_);
if ($_ =~/authuserfile/)
{$authuserfile= substr($_, $eqpos + 1, $len - $eqpos -2);}
elsif ($_ =~/logfile/)
{$logfile= substr($_, $eqpos + 1);}
elsif ($_ =~/pwdminlen/)
{$pwdminlen= substr($_, $eqpos + 1);}
elsif ($_ =~/title/)
{$title = substr($_, $eqpos + 1);}
elsif ($_ =~/description/)
{$description = substr($_, $eqpos + 1);}
elsif ($_ =~/yourname/)
{$yourname = substr($_, $eqpos + 1);}
elsif ($_ =~/oldpwd/)
{$oldpwd= substr($_, $eqpos + 1);}
elsif ($_ =~/newpwd1/)
{$newpwd1= substr($_, $eqpos + 1);}
elsif ($_ =~/newpwd2/)
{$newpwd2= substr($_, $eqpos + 1);}
elsif ($_ =~/btn_change/)
{$btn_change = substr($_, $eqpos + 1);}
elsif ($_ =~/btn_reset/)
{$btn_reset = substr($_, $eqpos + 1);}
elsif ($_ =~/changepwdok/)
{$changepwdok = substr($_, $eqpos + 1);}
elsif ($_ =~/changepwdfailed/)
{$changepwdfailed = substr($_, $eqpos + 1);}
elsif ($_ =~/oldpwderror/)
{$oldpwderror = substr($_, $eqpos + 1);}
elsif ($_ =~/passmustgreater/)
{$passmustgreater = substr($_, $eqpos + 1);}
elsif ($_ =~/twopassnotmatched/)
{$twopassnotmatched = substr($_, $eqpos + 1);}
elsif ($_ =~/entername/)
{$entername = substr($_, $eqpos + 1);}
elsif ($_ =~/enterpwd/)
{$enterpwd= substr($_, $eqpos + 1);}
elsif ($_ =~/errorpwd/)
{$errorpwd= substr($_, $eqpos + 1);}
elsif ($_ =~/back/)
{$back = substr($_, $eqpos + 1);}
}
close CGI_INI_FILE;
}
sub Index_Html
{
print "Content-type: text/html\n\n";
print <
$title
$description
$yourname $oldpwd $newpwd1 $newpwd2
注意:新密码位数必需大于$pwdminlen，且为字母与数字组合