webapp/handlers_boot.py

   1 #!/usr/bin/python
   2
   3 import logging
   4 import os
   5 import tornado.httpserver
   6 import tornado.ioloop
   7 import tornado.locale
   8 import tornado.options
   9 import tornado.web
  10
  11 import backend
  12
  13 from handlers_base import BaseHandler
  14
  15 BASEDIR = os.path.dirname(__file__)
  16
  17 def word_wrap(s, width=45):
  18         paragraphs = s.split('\n')
  19         lines = []
  20         for paragraph in paragraphs:
  21                 while len(paragraph) > width:
  22                         pos = paragraph.rfind(' ', 0, width)
  23                         if not pos:
  24                                 pos = width
  25                         lines.append(paragraph[:pos])
  26                         paragraph = paragraph[pos:]
  27                 lines.append(paragraph.lstrip())
  28         return '\n'.join(lines)
  29
  30 class BootBaseHandler(BaseHandler):
  31         pass
  32
  33
  34 class MenuGPXEHandler(BootBaseHandler):
  35         """
  36                 menu.gpxe
  37         """
  38         def get(self):
  39                 # Check if version of the bootloader is recent enough.
  40                 # Otherwise send the latest version of the PXE loader.
  41                 user_agent = self.request.headers.get("User-Agent", None)
  42                 if user_agent:
  43                         try:
  44                                 client, version = user_agent.split("/")
  45                         except:
  46                                 pass
  47                         else:
  48                                 # We replaced gPXE by iPXE.
  49                                 if client == "gPXE":
  50                                         return self.serve_update()
  51
  52                                 # Everything under version 1.0.0 should be
  53                                 # updated.
  54                                 if version < "1.0.0":
  55                                         return self.serve_update()
  56
  57                 # Devliver content
  58                 self.set_header("Content-Type", "text/plain")
  59                 self.write("#!gpxe\n")
  60
  61                 self.write("set 209:string premenu.cfg\n")
  62                 self.write("set 210:string http://boot.ipfire.org/\n")
  63                 self.write("chain pxelinux.0\n")
  64
  65         def serve_update(self):
  66                 self.set_header("Content-Type", "text/plain")
  67                 self.write("#!gpxe\n")
  68
  69                 # Small warning
  70                 self.write("echo\necho Your copy of gPXE/iPXE is too old. ")
  71                 self.write("Upgrade to avoid seeing this every boot!\n")
  72
  73                 self.write("chain http://mirror0.ipfire.org/releases/ipfire-boot/latest/ipxe.kpxe\n")
  74
  75
  76 class MenuCfgHandler(BootBaseHandler):
  77         def get(self):
  78                 self.set_header("Content-Type", "text/plain")
  79
  80                 latest_release = self.releases.get_latest()
  81                 stable_releases = self.releases.get_stable()
  82                 try:
  83                         stable_releases.remove(latest_release)
  84                 except ValueError:
  85                         pass
  86
  87                 development_releases = self.releases.get_unstable()
  88
  89                 self.render("netboot/menu.cfg", latest_release=latest_release,
  90                         stable_releases=stable_releases, development_releases=development_releases)