/*
**
** /download by hixxy (hixxy@mirc.net) for mIRC 6.17 or above.
**
**
** What the script does
** ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
**
** This script will let you download files from the internet using mIRC.
**
** To use some one of the script's features you will need to install SSL for mIRC.
** For help installing OpenSSL please take a look at this page: http://www.mirc.co.uk/ssl.html
**
** How to load
** ŻŻŻŻŻŻŻŻŻŻŻ
**
** You can load this script by typing /load -rs <path to download.mrc>. If you saved the file in your mIRC directory you can just do /load -rs download.mrc
** You can also just copy/paste it into remote from a website and then hit the OK button.
**
** How to use
** ŻŻŻŻŻŻŻŻŻŻ
**
** NOTE: You can use this to download from either HTTP or FTP servers.
**
** The syntax is one of the following.
** /download <-cpr> <name>
** /download [-eo] <name> <url> <file>
**
** The -cpr switches stand for cancel, pause and resume respectively. You can only use these on existing downloads.
**
** The -e switch means you want to create an SSL socket.
** The -o switch means you want to overwrite <file> if it exists rather than spitting out an error.
**
** The script files off various signals as it is downloading the file. These are all sent to the 'download' signal with parameters being:
**
** begin - when the download begins.
** cancel - when the download is cancelled.
** end - when the download finishes.
** error <error code> <error message> - when there's a socket error.
** notfound <file> - could not find the requested file.
** pause - when the download is paused.
** progress <size> - when the snippet has downloaded another chunk of the file. <size> is the amount of bytes downloaded.
** resume - when the download is resumed.
** size <size> - the size of the file has been acquired.
**
** FTP only signals:
**
** cannotassignaddress - the server sent a 425 error.
** requireslogin - the server does not allow anonymous access.
**
** Contact
** ŻŻŻŻŻŻŻ
**
** If you have a feature suggestion, bug report or question, please send an email to hixxy@mirc.net
** If you got the script from a scripting website and I (hixxy) submitted the code, you may also leave feedback on the script's comment page.
**
*/

alias -l raisemessage {
  if ($line($active,0)) && (($show) || ($1 == -e)) { linesep -a }
  echo $colour(info) -a $+ $iif($1 != -e,q $1-,$chr(32) $2-)
  if ($show) || ($1 == -e) { linesep -a }
  halt
}

alias download {
  var %overwrite, %ssl
  if ($isid) { raisemessage -e * /download: Should be called as a command }
  if ($0 < 3) && (!$istok(-c -p -r,$1,32)) { raisemessage -e * /download: Insufficient parameters }
  if (-* iswm $1) {
    if ((c isincs $1) || (p isincs $1) || (r isincs $1)) && (!$sock(download_ $+ $2)) { raisemessage -e * /download: No such download ' $+ $2' }
    if (c isincs $1) {
      if ($isfile($gettok($sock(download_ $+ $2).mark,3-,32))) { .remove $qt($gettok($sock(download_ $+ $2).mark,3-,32)) }
      if (http:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) {
        sockclose download_ $+ $2
        .signal download $2 cancel
        raisemessage * /download: Cancelled download ' $+ $2'
      }
      elseif (ftp:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) {
        sockclose download_ $+ $2
        sockclose ftp_download_ $+ $2
        sockclose ftpc_download_ $+ $2
        .signal download $2 cancel
        raisemessage * /download: Cancelled download ' $+ $2'
      }
    }
    elseif (p isincs $1) {
      if (http:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) && (!$sock(download_ $+ $2).pause) {
        sockpause download_ $+ $2
        .signal download $2 pause
        raisemessage * /download: Paused download ' $+ $2'
      }
      elseif (ftp:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) && (!$sock(download_ $+ $2).pause) {
        sockpause download_ $+ $2
        if ($sock(ftpc_download_ $+ $2)) { sockpause ftpc_download_ $+ $2 }
        .signal download $2 pause
        raisemessage * /download: Paused download ' $+ $2'
      }
    }
    elseif (r isincs $1) {
      if (http:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) && ($sock(download_ $+ $2).pause) {
        sockpause -r download_ $+ $2
        .signal download $2 resume
        raisemessage * /download: Resumed download ' $+ $2'
      }
      elseif (ftp:* iswm $gettok($sock(download_ $+ $2).mark,2,32)) && ($sock(download_ $+ $2).pause) {
        sockpause -r download_ $+ $2
        if ($sock(ftpc_download_ $+ $2)) { sockpause -r ftpc_download_ $+ $2 }
        .signal download $2 resume
        raisemessage * /download: Resumed download ' $+ $2'
      }
    }
    if (e isincs $1) { var %ssl = $true }
    if (o isincs $1) { var %overwrite = $true }
    tokenize 32 $2-
  }
  if ($sock(download_ $+ $1)) { raisemessage -e * /download: Download exists ' $+ $1' }
  if ($isfile($3-)) && (!%overwrite) { raisemessage -e * /download: File exists ' $+ $3-' }
  if ($nopath($3-) == $null) { raisemessage -e * /download: No filename supplied ' $+ $3-' }
  if ($nofile($3-) $+ $mkfn($nopath($3-)) != $3-) { raisemessage -e * /download: Filename not valid $+(',$nopath($3-),') }
  if (%ssl) && (!$sslready) { raisemessage -e * /download: SSL not ready }
  if (http:* !iswm $2) && (ftp:* !iswm $2) { raisemessage -e * /download: Invalid URL }
  var %port = $iif(http:* iswm $2,80,21)
  while (!$portfree(%port)) { inc %port }
  sockopen $iif(%ssl == $true,-e) download_ $+ $1 $gettok($2,2,47) %port
  sockmark download_ $+ $1 $false $2-
  raisemessage * /download: Downloading $2 to $3-
}

on *:sockopen:download_*:{
  if ($sockerr) {
    .signal download $mid($sockname,10) error $sock($sockname).wserr $sock($sockname).wsmsg
    return
  }
  if (http:* iswm $gettok($sock($sockname).mark,2,32)) {
    sockwrite -n $sockname GET / $+ $gettok($gettok($sock($sockname).mark,2,32),3-,47) HTTP/1.1
    sockwrite -n $sockname Host: $gettok($gettok($sock($sockname).mark,2,32),2,47)
    sockwrite -n $sockname Accept: */*
    sockwrite -n $sockname Connection: close
    sockwrite -n $sockname User-Agent: mIRC/ $+ $version
    sockwrite -n $sockname
  }
}
on *:sockread:download_*:{
  if (http:* iswm $gettok($sock($sockname).mark,2,32)) {
    if ($gettok($sock($sockname).mark,1,32) == $false) {
      var %data
      sockread %data
      if (*404 not found* iswm %data) {
        .signal download $mid($sockname,10) notfound / $+ $gettok($gettok($sock($sockname).mark,2,32),3-,47)
        sockclose $sockname
        return
      }
      if (%data == $null) {
        sockmark $sockname $true $gettok($sock($sockname).mark,2-,32)
        .signal download $mid($sockname,10) begin
      }
      elseif (content-length: * iswm %data) { .signal download $mid($sockname,10) size $gettok(%data,2,32) }
    }
    else {
      sockread -f &data
      bwrite $qt($gettok($sock($sockname).mark,3-,32)) -1 -1 &data
      .signal download $mid($sockname,10) progress $sockbr
    }
  }
  else {
    var %data
    sockread %data
    tokenize 32 %data
    if ($1 == 150) { .signal download $mid($sockname,10) size $mid($gettok($1-,-2,32),2,-1) }
    elseif ($1-2 == 200 PORT) { sockwrite -n $sockname TYPE I }
    elseif ($1-2 == 200 TYPE) { sockwrite -n $sockname RETR $gettok($gettok($sock($sockname).mark,2,32),-1,47) }
    elseif ($1 == 220) { sockwrite -n $sockname USER anonymous }
    elseif ($1 == 226) {
      .signal download $mid($sockname,10) end
      sockclose $sockname
      sockclose ftp_ $+ $sockname
      sockclose ftpc_ $+ $sockname
    }
    elseif ($1 == 230) {
      if ($deltok($gettok($gettok($sock($sockname).mark,2,32),3-,47),-1,47) != $null) { sockwrite -n $sockname CWD / $+ $v1 }
    }
    elseif ($1 == 250) {
      socklisten ftp_download_ $+ $mid($sockname,10) 3762
      sockmark ftp_download_ $+ $mid($sockname,10) $sock($sockname).mark
      sockwrite -n $sockname PORT $replace($sock(ftp_download_ $+ $mid($sockname,10)).ip,.,$chr(44)) $+ ,14,178
    }
    elseif ($1 == 331) { sockwrite -n $sockname PASS ftpd }
    elseif ($1 == 425) {
      .signal download $mid($sockname,10) cannotassignaddress
      sockclose $sockname
    }
    elseif ($1 == 530) {
      .signal download $mid($sockname,10) requireslogin
      sockclose $sockname
    }
    elseif ($1 == 550) {
      .signal download $mid($sockname,10) notfound / $+ $gettok($gettok($sock($sockname).mark,2,32),3-,47)
      sockclose $sockname
    }
  }
}
on *:socklisten:ftp_download_*:{
  sockaccept ftpc_ $+ $mid($sockname,5)
  sockmark ftpc_ $+ $mid($sockname,5) $sock($sockname).mark
  .signal download $mid($sockname,14) begin
}
on *:sockclose:download_*:{ .signal download $mid($sockname,10) end }
on *:sockread:ftpc_*:{
  sockread -f &data
  while ($sockbr) {
    bwrite $qt($gettok($sock($sockname).mark,3-,32)) -1 -1 &data
    .signal download $mid($sockname,15) progress $sockbr
    sockread -f &data
  }
}

on *:load:{
  if ($version < 6.17) {
    !.echo -q $input(This script was created for mIRC version 6.17 or later $+ $chr(44) you are using $version,dho,Invalid version)
    .unload -rs $script
  }
}